ST. PETERSBURG, Fla. (AP) _ A woman who said she was fed up with people stealing things from her family chased a suspect several blocks, tackled him and, with an assist from strangers, cornered him until police arrived.

She was able to retrieve her son's stolen bike, authorities said Tuesday.

''She identified it and so did both her boys,'' said police spokesman George Pinckney. ''The man couldn't prove it was his.''

Jeanette Krupp, 37, said her 17-year-old son Joseph's 10-speed bicycle was stolen while he was fishing Sunday. The next morning, she and her 13-year-old son Carl got in their car and went looking for it.

''I stay home most of the time. I don't go out much. But when the bike was stolen, I wanted it back,'' said Mrs. Krupp. ''I was protecting my property.''

She said several bikes have been stolen from her home in the past few years.

Mrs. Krupp said that when they spotted Joseph's bike she ''bumped the (bike) seat with the corner'' of her car and the cyclist jumped off and fled.

''I hollered 'You better stop. You've got my bike. I want it,' she said.

She led a foot chase, joined by Carl and two strangers. They didn't give up even when the man reportedly pulled a knife.

Mrs. Krupp said she tackled the man.

''He got up again. I pushed him and he pushed me back. So I tackled him again,'' she said. ''It was the first time I've ever done something like this.''

Police arrested Jack Lutes, 28, and accused him of aggravated battery and he was being held in lieu of $2,000 bond. He was not accused of theft. The case is being investigated by the Pinellas County State Attorney's office.

Lutes said he had a comb, not a knife, and he ran because he was frightened of the ''crowd of people'' after him.