Police are focusing on the person of interest, who's seen in the video walking and, at times, running along a street close to where, around 9 p.m. on Oct. 9, 22-year-old college student Benjamin Mitchell was shot and killed at a bus stop near his home.
Two days later, Monica Hoffa, 32, was shot in the evening while attempting to meet up with a friend, police said.
Two days elapsed before Hoffa's remains turned up in a vacant lot on New Orleans Avenue East.
On Oct. 19 at 8 p.m., Anthony Naiboa, 20, was shot to death on North 15th Street shortly after he got off a bus at the wrong stop.
Tampa police release more video of person of interest in 3 killings - ABC News