An off-duty Iowa City police detective helped prevent the escape of a shoplifter at Hy-vee, police said.

Tyshiana Mahomes, 19, was charged Feb. 21 with second-degree robbery.

According to police reports, police were dispatched to Hy-Vee, 812 S. First Ave., after receiving a report of a shoplifter fighting with staff members.

When officers arrived on the scene, an off-duty detective was holding Mahomes on the ground. The detective said he stopped her after he saw a manager try to prevent her from leaving the store.

The off-duty detective told police he saw Mahomes run into the parking lot attempting to flee the scene after she shoved the manager and punched him in the face.

The detective identified himself as police, and he was able to bring Mahomes back in the store, but she continued to resist until he brought her to the ground.

The report said officers found two allegedly stolen alcohol bottles on Mahomes.

First-degree robbery is a Class C felony punishable by up to 10 years in prison and a maximum fine of $10,000.

— by Hayley Bruce