Police say they’ve interviewed an 86-year-old Lakewood woman suspected of crashing into a skateboarder and fleeing the scene, leaving him critically injured in the roadway earlier this week.

She is cooperating with authorities, and detectives have decided not to arrest her while they continue to build their case, Long Beach police spokeswoman Nancy Pratt said.

“They’ve spoken with her,” Pratt said. “She’s fully cooperating with our investigation.”

Police have not publicly identified the woman, but they plan to present prosecutors with a criminal case against her some time soon, according to Pratt.

“Given the totality of the circumstances,” detectives didn’t feel the need to take her into custody, partially because it would start the clock ticking on filing a criminal case, according to Pratt.

If someone is in custody, authorities typically have 48 hours to file charges.

Police quickly homed in on the woman as a suspect after the hit-and-run crash on Bellflower Boulevard at 27th Street Tuesday afternoon.

A skateboarder was trying to cross Bellflower around 1:45 p.m. when a driver ran into him and continued south, police said.

The force of the crash sent the man smashing into the vehicle’s windshield and cracked his skateboard, according to Citlalli Ortiz, who said her boyfriend witnessed what happened.

Paramedics rushed the man to the hospital in critical condition. An update on his injuries wasn’t immediately available Thursday.