Alleged killer cop Beau Lamarre-Condon's mother has been banned from contacting her son while she is behind bars after being accused of attempting to influence a witness in his upcoming double murder trial.

Former senior constable Lamarre-Condon, 30, was charged with murder after he allegedly shot dead Network Ten identity Jesse Baird and Qantas flight attendant Luke Davies at Paddington, in the city's east, in February 2024.

The one-time celebrity chaser had reportedly briefly dated Mr Baird, 26, before the former Studio Ten presenter began a relationship with Mr Davies, 29.

His mother, Coleen Lamarre, 63, was arrested at her Balmain home in Sydney's inner-west on April 29 and has been held in a maximum-security women's prison for the past month.

She was charged with one count of 'intending to pervert the course of justice' in relation to her son's murder charges.

Police allege Lamarre tried to persuade a man, referred to as 'The Witness' in court papers, to give a sworn statement 'that did not accord with his true recollection'.

She allegedly committed the offence between 2pm and 3pm on January 14 at Sutherland, in Sydney's south.

Like her son, Lamarre-Condon's mother is also a former police officer, and expressed fears about her status as an ex-cop when she first entered the prison system after an unsuccessful bail application earlier this month.

She was placed in a 'special management area' - for inmates who might be vulnerable or at risk from others - at Australia's second-largest women's prison, the 531-bed Dillwynia Correctional Centre at Berkshire Park in Sydney's north-west. 

Her son is being held at a clandestine unit within the Long Bay prison complex called the Special Purpose Centre (SPC) which houses NSW's most vulnerable inmates.

Sometimes known as The Kennel because of the number of 'dogs' - or informers - the SPC accommodates, once inmates step inside its walls they are known internally by a number rather than a name.

Until her arrest, Lamarre had been able to visit Lamarre-Condon at the SPC on weekends and to take calls from him at other times. 

NSW inmates are generally allowed to send each other correspondence, but a prison source confirmed Lamarre and Lamarre-Condon were prohibited from any form of communication due to the nature of their respective charges.

A spokeswoman for Corrective Services NSW (CSNSW) said the department did not comment on 'the circumstances or management' of individual inmates.

'Many inmates in custody have non-association orders imposed which prevent contact with one or more inmates also housed within the correctional system,' the spokeswoman said.

'A non-association order may be made if it is suspected that contact between inmates may result in violence, criminal activity or perversion of the course of justice.

'CSNSW has policies and procedures in place to ensure non-association orders are effective.'

Lamarre's solicitor John Walford previously told Daily Mail his client was 'shell-shocked' when first brought into custody and taken to Day Street police station cells.

'Being an ex-police officer, there are obviously issues there, but she's very strong,' Mr Walford, a former detective and prosecutor, said at the time.

A source close to Lamarre said she had been adapting to life in Dillwynia, where the mother-of-two was keeping herself busy with a job. 

'She seems upbeat,' the source said. 'She's a very determined woman. She's holding up really well.'

Dillwynia is the same jail where Jessica Camilleri, who beheaded her mother in July 2019, attacked another inmate in what was described as an attempted scalping in February last year. 

Before her arrest, Lamarre had regularly attended her son's court appearances but otherwise shunned attention and was extremely reluctant to talk with reporters.

She had long been convinced her communications were being monitored by police and told family and friends she might be under physical surveillance at times.

It is understood Lamarre had been using her background knowledge of law enforcement to assist Lamarre-Condon prepare his defence, but police say she went too far.

Lamarre has not been required to enter a plea and is next due in court on July 17. She is seeking to make a second bail application in the Supreme Court.

On Monday, she appeared via audio-visual link in Downing Centre Local Court to plead guilty to an old speeding offence of driving 49km/h in a 40km/h zone. 

Judge Greg Grogin convicted Lamarre but no penalty was imposed.

Lamarre-Condon was originally charged with two counts of murder, later amended to indicate they were alleged to be related to domestic violence. 

The shootings were allegedly the culmination of a months-long campaign of 'predatory behaviour' targeting Mr Baird. 

He has pleaded not guilty to murdering Mr Baird and Mr Davies and is set to face trial in September. 

Lamarre-Condon has also pleaded not guilty to aggravated break and enter with intent to commit a serious indictable offence.

That charge relates to an allegation Lamarre-Condon broke into Mr Baird's house and stole his wallet and phone in August 2023, six months before he and Mr Davies were killed.

Lamarre-Condon, who joined the NSW Police Force in 2017, allegedly shot Mr Davies and Mr Baird at Mr Baird's home with his Glock service pistol on February 19, 2024.

He then allegedly bundled their bodies into surfboard bags and dumped them at Bungonia, about 180km south-west of Sydney, where they were located on February 27.

Daily Mail previously revealed Lamarre-Condon had asked the NSW Law Enforcement Conduct Commission (LECC) to send an investigator to monitor his trial.

At his arraignment in October, Lamarre-Condon accused some police who investigated Mr Davies and Mr Baird's deaths of 'serious misconduct and corruption'.

Lamarre-Condon has spent almost two years in the SPC, after initially being kept in strict segregation at the Metropolitan Remand and Reception Centre in Sydney's western suburbs.

Another prison source previously told Daily Mail the SPC offered the most isolated custodial conditions in Australia: 'It's basically for inmates who can't be put anywhere else because they'd be killed.'

Whereas the High Risk Management Correctional Centre at Goulburn - known as Supermax - contains prisoners who represent a danger to staff and other inmates, the SPC warehouses those who are at extreme risk of physical harm. 

Mark Standen, the one-time assistant director of the NSW Crime Commission who was jailed over a $120million drug plot, spent most of his 16 years behind bars at the SPC before his release in June 2024.

Before becoming a police officer, Lamarre-Condon ran a celebrity blog, posing in photos with visiting celebrities including Taylor Swift, Selena Gomez, Miley Cyrus, Harry Styles and Katy Perry. 

Lamarre-Condon was sacked from the NSW Police Force in March 2024. He faces a directions hearing on Friday in the Supreme Court.