ST. PETERSBURG, Fla. (AP) — Police in St. Petersburg say a man who tried to carjack an unmarked police car was surprised by two detectives, who arrested him after he tried to run. A St. Petersburg police report said the undercover detectives were sitting in their vehicle last week when 27-year-old Dominique Albert of the Tampa Bay area opened a passenger door while armed with a steak knife. Both detectives yelled "police" and one drew his gun as Albert reportedly dropped the knife and tried to run, according to the report.