The parents of a six-year-old killed in a hit-and-run had a courtroom in tears as they described how their son desperately tried to get out of the way.

Hudson O'Loughlin was biking near an alleyway with his father, Matt, in San Diego, California when Tiffany Sanchez, 32, allegedly turned down the roadway and fatally hit him in January. 

Matt testified at the preliminary hearing that his son had tried to swerve out of the way of Sanchez's vehicle. 

Sanchez is accused of accelerating the vehicle before running over the six-year-old. 

O'Loughlin's mother, Juliana, tearfully explained that her son was 'blue' after being run over, CBS 8 reported. 'He was blue, he was convulsing, I was asked to hold his legs down so we could keep him still.'

'He was struggling to breathe, his jaw was clenched,' she told the courtroom. The 911 call was also played in the courtroom.  

Many in the courtroom were drying their eyes as the devastated father spoke, NBC San Diego reported.  

After Sanchez allegedly hit the boy, his mother Juliana chased her car down the street hoping to see her license plate. 

A bystander was able to get the information, which would later lead investigations to Sanchez's home in National City. 

Sanchez, who has pleaded not guilty, allegedly looked up the accident on Facebook and Google just hours after the crash, NBC San Diego reported.

Prosecutors also reportedly pointed out that Sanchez tried to hide from investigators when they approached her.

A witness testified that they saw Sanchez hit the child. 

'We saw it stop and then immediately, the jeep driver slammed the gas to accelerate rapidly,' the anonymous witness said. 

They said it looked like the vehicle 'bounced over something.' 

David Morrow, who was driving behind the woman at the time, previously recalled seeing her 'cut right into the alley' before running Hudson over 'twice,' he told CBS 8.

'Like, both wheels ran over the kid. She stopped right in front for about ten seconds. That's when I pulled behind her and got her license number, and then she took off,' Morrow added.

He noted that a bystander jumped in to help Hudson.

'He got up at first and was standing there all in pain, and then they laid him down, and he stopped breathing right in front of me,' Morrow said of Hudson. 'It was sad, and then I left.'

Little Hudson was then transported to a nearby hospital, where he died.

Police said Sanchez was not under the influence of alcohol at the time. 

Hudson has been remembered by his family and friends as 'a bright, curious child who loved all things science, and his energy was contagious,' according to a GoFundMe page.

He loved swimming, playing with Legos, riding his bike, being outdoors, and 'had a passion for BMX,' also known as bicycle motocross.

As of Thursday afternoon, the fundraiser has garnered nearly $100,000. 

His mother took to Facebook in January to write an emotional post about the loss of her oldest child.

'Being Hudson’s mother was the greatest honor of my life,' she wrote alongside a series of beautiful family pictures.

She said her son already knew what he wanted to be when he grew up: a military scientist.

'We made many trips to the library searching for books on science and the military. He proudly wore his camo backpack to school, with his tactical camo water bottle across his shoulder, already stepping into the future he imagined for himself,' she wrote.

His heartbroken mother added: 'Hudson, thank you for choosing me as your mama. You changed our lives forever. You will be loved, remembered, and carried with us — always.'

Sanchez, who is out on bond, is due back in court on July 27. Her trial is expected to start in September. 

She faces up to 12 years in state prison if convicted.