The burglary of late NASCAR driver Greg Biffle’s North Carolina home is being treated as a possible inside job — after a series of events that began just hours after he and his family died in a plane crash.

Biffle, 55, was killed alongside his wife Cristina and their two children, Emma, 14, and Ryder, 5, when their private jet went down near Statesville Regional Airport, NC, on Dec. 18.

New search warrants obtained by local station WBTV allege the robbery may have been an inside job and link a woman known to the family to both the break-in and earlier suspicious activity, marking a significant development in the investigation.

Biffle’s Mooresville home was broken into on the night of Jan. 7 into Jan. 8 — weeks after the family was killed.

Investigators say the suspect forced entry through a bedroom door, accessed a safe, and took $30,000 in cash, two handguns, NASCAR memorabilia and a backpack.

Surveillance footage shows a hooded person outside around 11 p.m., and a woman inside the home moving directly through key areas of the property, according to WSOC TV.

Detectives say the suspect appeared to know where security cameras were located and the layout of the house, including a closet and a safe room.

Investigators claim that the level of familiarity is a key reason they believe the burglary may be connected to earlier suspicious activity in the case.

Affidavits tied to the case reference several people in the couple’s “inner circle,” though no one has been publicly identified or charged.

During a Jan. 16 celebration of life event for the family, detectives identified a woman who resembled the suspect seen on surveillance footage. She was described as a friend of the family.

License plate reader data also placed a vehicle linked to her near the home shortly before the break-in, according to the warrants.

Investigators say she later canceled plans with friends and traveled to Pennsylvania after images from the burglary were released.

Within hours of the crash, the family’s email and banking accounts were targeted, WBTV reported.

An email was sent to Biffle’s account just after 2 a.m. on Dec. 19, according to search warrants obtained by the outlet.

“I heard you’re dead, rest in hell,” the email said.

Detectives say that there were then changes to email addresses, phone numbers and passwords as their bank accounts were compromised.

Authorities allege that “hundreds of thousands of dollars” were stolen through a series of fraudulent transactions in the days and weeks that followed.

The documents describe attempts to access accounts across multiple states, including changes made over the phone and at least one fraudulent check linked to Biffle’s business that was cashed on Dec. 30.

On April 23, authorities executed search warrants at a home in Lincoln County and a business in Mooresville.

No stolen items were recovered, but several electronic devices were seized from the residence. Nothing was taken from the business.

Detectives say the case now spans multiple states and involves multiple potential suspects.

“We can’t say they’re not connected, but we’re still investigating,” Iredell County detectives told WBTV.

Investigators have not ruled out that the break-in was part of a broader effort tied to the alleged financial scheme.

Biffle was one of NASCAR’s most recognizable drivers, with more than 50 wins across its three national series, including 19 in the Cup Series, along with championships in the Truck and Xfinity divisions.

The cause of the Dec. 18 crash remains under investigation.

Authorities previously said the aircraft attempted to return to the airport shortly after takeoff, with erratic changes in speed and altitude before going down.