A 13-year-old girl plunged through a skylight and fell 25 feet onto a pallet at a Northwest Side building  but escaped serious injury, police said.

The girl was on the roof of Mohawk Electric Construction Company in the 5500 block of West Montrose Avenue with a 13-year-old boy who lives nearby when the accident happened at 5:40 p.m. Thursday, police said.

She stepped onto a brittle plastic skylight, shattering it and plunging 25 feet onto a wooden pallet, police said.

She was able to get up and unlock the door as the boy called his father, who called 911, police said.

She reported pain in her neck and back and a minor laceration on her arm, and police said her condition was stabilized at Advocate Lutheran General Hospital in Park Ridge.

Fire officials listed her in serious condition with trauma injuries when she was taken by ambulance to the hospital.

“She seemed none the worse for wear,’’ a police source said. “She’s one lucky little girl.’’

rsobol@tribune.com

Twitter:@RosemarySobol1