Police threw a net over the city looking for whoever gunned down a third officer in the past month, and less than 24 hours later, arrested a 16-year-old in the killing, the chief said Tuesday.Officer David Crawford was shot multiple times Monday night while investigating a report of a prowler in a neighborhood just south of Tropicana Field where the Tampa Bay Rays play baseball.  

Helicopters, SWAT teams, dozens of law enforcement and dogs searched for the gunman and a swath of the city was closed to traffic for parts of Monday and into Tuesday.