Officers were called to a shooting at the Cascade View apartment complex just after 6 p.m. When they arrived at the complex, located in the 300 block of Ball Street, they found two men with gunshot wounds.
One man in his late 20s was taken to a Mount Vernon's Skagit Valley Hospital and the other -- a man in his mid 30s -- was pronounced dead at the scene, according to Lt. William Tucker with the Sedro-Woolley Police Department.
Tucker said he believes the shooting was gang related and may be retaliation for a recent shooting that took place outside of Sedro-Woolley.
The deceased man's family confirmed to police that he was a gang member, Tucker said.
Police are questioning two residents at the apartment complex. The men are considered persons of interest in the case, but no arrests have been made.
A third person of interest remains on the loose.
The surviving victim is in critical condition.