Long Beach police are trying to find a driver who got out of his car and walked away from the scene of a crash that injured a woman so severely that she lost her leg, according to recently filed court documents.

The crash happened last month in Bluff Heights where the woman was unloading items from the back of her SUV around 11 p.m. on July 23, according to a search warrant filed in Long Beach Superior Court.

She was standing at the back of the SUV, which was double-parked on Coronado Avenue near Third Street, when the driver rear-ended her, pinning her legs between the two vehicles, police wrote.

The driver backed up his Honda CRV, and neighbors started helping the victim according to police. The driver walked to the trunk area of his own vehicle and then walked away, police wrote.

Since then, police have been trying to figure out who the driver was.

There was a woman riding with the driver, but he left without her, according to the warrant. Police wrote she told investigators the driver was a friend she only knew as “William.”

When police searched the car, they found mail address to someone whose name includes “William,” according to the warrant.

They also collected a cell phone and samples for possible DNA evidence, police wrote. The car is registered to a woman, but police said they believe a man was driving during the crash.

“No arrests have been made at this time, but detectives are actively investigating this case and looking into leads to further the investigation,” Long Beach police spokeswoman Jennifer De Prez said.