More trouble for Lindsay Lohan’s family: Her 13-year-old sister, Ali, has been involved in a traffic accident after allegedly sneaking out of the family house.

She was in a car that crashed on Friday night, family insiders say. Nassau County police will not give any official details of the accident.

“We don’t normally comment on traffic accidents unless there is a death or serious injury,” Lt. Kevin Smith tells In Touch.

The accident, in which two people were slightly injured, happened at 7:20 p.m. on Friday, close to the Lohan family home in Merrick, on New York’s Long Island.

“Ali had snuck out of the house to be with her friend, a 16-year-old boy who has a learner’s permit. He had taken the car without his mother’s permission,” says the insider. “Luckily, she was not hurt.”

Ali is currently with her mom, Dina, and other family members visiting Lindsay in rehab in Utah.