Chico >> Jennifer Barker found only a cut lock on the ground where her Pure Fix bike had been parked after she got out of class at Chico State University Monday evening.

“I thought I was out $300,” she said.

Barker called her boyfriend, Alex Blease, and walked to the University Police Department station at West Second and Chestnut streets.

While Barker was reporting the bike stolen, she and Blease spotted a man riding west on the north side of Second Street on what looked like Barker’s bike.

“Alex tackled him on Second Street,” Barker said.

Blease said after he caught the man, the man threatened him, claiming he had a gun in his bag.

The man slipped away and Blease and another bystander chased him onto Ivy Street, where they caught and held him until University Police subdued him.

A gun wasn’t found in the man’s pack, but he had some “cutting tools,” Blease said.

The man complained of being injured, so police called an ambulance to treat and transport him to Enloe Medical Center.

Officer Dale Glander checked the serial number on the bike, and verified it was registered to Barker.

Glander gave Barker and Blease a ride back to the police station, using the rack on the front of his patrol car to bring the recovered bike with them.

People like the “fixie” bikes because they’re customizable, Barker said. Her bike was customized at Greenline Cycle on Main Street sells for about $325 brand-new.

“People need to report bikes when they’re stolen,” Barker said. “The city and the police have to know what a problem thefts are.”