Two eyewitnesses reported that a man jumped from the Sunshine Skyway Bridge about 3:37 p.m. Thursday, police say.
Two rescue boats and a helicopter were scanning the area, according to Lt. Joel Granata of St. Petersburg Fire and Rescue, but as of 5 p.m. Thursday, a body had not been located.
Four people have died after jumping off the bridge this year. Two people have survived the jump and one person was saved from jumping.
Another 11 possible jumpers have been reported, according to skywaybridge.com.