Greg Biffle’s House Robbed of $30,000 Less Than a Month After NASCAR Star, Wife and Kids Die in Plane Crash

Thieves stole $30,000 in cash and a $30 backpack from the home of NASCAR champion Greg Biffle and his wife Cristina Grossu Biffle, three weeks after they were killed in a plane crash, authorities said.

According to a police report obtained by PEOPLE, the Iredell County Sheriff’s Office arrived at the Biffle estate on Doolie Road in Mooresville, N.C. on Thursday, Jan. 8 at approximately 6:23 p.m., after Cristina’s mother Cathy Grossu alerted authorities about the crime, according to the police report.

Two guns and NASCAR memorabilia were also reported as possibly missing from the Biffle home, according to CBS affiliate WBTV.

No arrests have been made in the incident, as police continue to investigate the theft.

A representative with the Iredell County Sheriff’s Office did not immediately respond to PEOPLE’s request for additional details.

The NASCAR driver, 55, and his wife, 35, died along with their five-year-old son Ryder, Greg’s 14-year-old daughter Emma and three others when their Cessna Citation 550 crashed while trying to return to Statesville Regional Airport on Thursday, Dec. 18.

Craig Wadsworth, 64 — a well-known figure in NASCAR circles who once drove former race car driver Kenny Wallace’s motorhome — was also aboard the plane, as was commercial airline pilot Dennis Dutton, 67, and his 20-year-old son Jack, who was studying aviation at Auburn University.

At an initial press conference on Friday, Dec. 19, officials said they had not been able to determine who was flying the plane. The accident happened while fog and heavy rain were present in the area, AccuWeather’s Dan DePodwin previously told PEOPLE in a statement.

In 911 calls obtained by PEOPLE, witnesses reported seeing heavy black smoke after the plane went down at the end of Runway 28 shortly after 10 a.m. that morning.

A public remembrance event honoring the seven victims of the crash is scheduled for Friday, Jan. 16 in Charlotte.

Thieves stole $30,000 in cash and a $30 backpack from the home of NASCAR champion Greg Biffle and his wife Cristina Grossu Biffle, three weeks after they were killed in a plane crash, authorities said.

According to a police report obtained by PEOPLE, the Iredell County Sheriff’s Office arrived at the Biffle estate on Doolie Road in Mooresville, N.C. on Thursday, Jan. 8 at approximately 6:23 p.m., after Cristina’s mother Cathy Grossu alerted authorities about the crime, according to the police report.

Two guns and NASCAR memorabilia were also reported as possibly missing from the Biffle home, according to CBS affiliate WBTV.

No arrests have been made in the incident, as police continue to investigate the theft.

A representative with the Iredell County Sheriff’s Office did not immediately respond to PEOPLE’s request for additional details.

The NASCAR driver, 55, and his wife, 35, died along with their five-year-old son Ryder, Greg’s 14-year-old daughter Emma and three others when their Cessna Citation 550 crashed while trying to return to Statesville Regional Airport on Thursday, Dec. 18.

Craig Wadsworth, 64 — a well-known figure in NASCAR circles who once drove former race car driver Kenny Wallace’s motorhome — was also aboard the plane, as was commercial airline pilot Dennis Dutton, 67, and his 20-year-old son Jack, who was studying aviation at Auburn University.

At an initial press conference on Friday, Dec. 19, officials said they had not been able to determine who was flying the plane. The accident happened while fog and heavy rain were present in the area, AccuWeather’s Dan DePodwin previously told PEOPLE in a statement.

In 911 calls obtained by PEOPLE, witnesses reported seeing heavy black smoke after the plane went down at the end of Runway 28 shortly after 10 a.m. that morning.

A public remembrance event honoring the seven victims of the crash is scheduled for Friday, Jan. 16 in Charlotte.