4 p.m. Tuesday update: Otis Henderon is in custody, according to St. Petersburg police. He faces one count of first-degree murder and one count of first-degree attempted murder.
City police are looking for a man they called armed and dangerous after a man was killed and his sister injured.
Authorities said Monday afternoon they are looking for Otis Joseph Henderson, 44.
Police responded at about 7:20 a.m. Monday to the 4200 block of Elkcam Blvd SE and found Paul Dumas, 68, dead at the scene.
His sister, 63-year-old Elaine Vidinha was badly injured. Police said she is in critical but stable condition at Bayfront Hospital.
In a news release, police said: "Henderson is believed to have argued with Paul Dumas and his sister Elaine Vidinha before Dumas died and she was beaten."
Anyone with information is asked to call St. Petersburg police at 727-893-7780.