WATERBURY, Conn. (WTNH) — Waterbury Police is still investigating the fatal shooting of a 24-year-old man that happened over the weekend.

Police said 24-year-old Devante Echols was shot in the head on Bronson Street Saturday night. On Monday, police announced they arrested 45-year-old Kyshone Jackson in connection to the homicide.

Police are now actively looking for another party involved in the incident, who Waterbury Police Department’s Major Crimes Division identified as 54-year-old Bobby Cooke of Waterbury. Cooke has not been located.

Major Crime’s detectives obtained an arrest warrant for Cooke for the following charges: murder, carrying a pistol without a permit, criminal possession of a pistol or revolver, criminal use of a weapon, reckless endangerment 1st degree and illegal discharge of a firearm.

Police said Cooke is known to reside in the Waterbury and New Haven areas and should be considered armed and dangerous. Anyone with information on the whereabouts of Cooke can contact the Detective Bureau at (203) 574-6941 or Crime Stoppers at (203) 755-1234.

Jackson is charged with murder, unlawful discharge of a firearm, criminal possession of a pistol or revolver, carrying a pistol without a permit, illegal sale or transfer of a firearm, weapons in a motor vehicle, criminal possession of a pistol, revolver, or ammunition, and reckless endangerment.

Jackson remains in police custody on a $3-million.