KANSAS CITY, Kan. (AP) — Authorities are urging witnesses to a Kansas bar shooting that left four dead and five wounded to come forward as the hunt continues for one of the suspects.

Police continued searching Thursday for Hugo Villanueva-Morales, more than four days after gunfire erupted early Sunday at the Tequila KC bar in Kansas City, Kansas. Villanueva-Morales and 23-year-old Javier Alatorre are charged with four counts of first-degree murder. Alatorre was arrested hours after the shooting at a home in Kansas City, Missouri.

Officer Thomas Tomasic says officers don’t know whether Villanueva-Morales is in the area or has left. He says police are at a “slow point right now as far as information.” Police want to talk to any witnesses who were in the bar but left before officers arrived.