The suspect in Felton's shooting has been described by witnesses as a tall, slim black man with a light complexion, clad in all black clothing and armed with a large black pistol, according to police.

Investigators are not calling the suspect a serial killer because they can't yet determine whether the same individual committed all the killings. Still, Dugan said police are \"pretty convinced\" that the suspect was involved in the deaths of at least Mitchell and Felton.

\"Finding this killer is a community effort,\" Tampa Mayor Bob Buckhorn said in a statement Thursday. \"We need to and will find who's committing these heinous, senseless murders and when we do, it will be because of people like Richard, the Seminole Heights community, Tampa Police Department and our partners in the law enforcement community who have poured their blood, sweat and tears into bringing this killer to justice.\"

ABC News' Julia Jacobo and M.L. Nestel contributed to this report.

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