Deputies responding to a report of an assault with a deadly weapon involving a firearm shortly before 9 a.m. Monday found Courtney Chandler, 28, and 32-year-old Nicholas McClure mortally wounded in a home in the 600 block of 11th Street in Ramona, according to the county Sheriff’s Office. Chandler and McClure died at the scene.

A man who was sitting on a set of steps in front of the residence when the patrol personnel arrived was taken into custody, questioned and arrested, Lt. Juan Marquez said. The suspect, 33-year-old Ryan Wesley Proffitt of Escondido, was booked into San Diego Central Jail on suspicion of two counts of first-degree murder.