A valleywide manhunt lasting about 55 hours came to a sudden end Friday morning with the arrest of the man authorities say shot and killed a 33-year-old Newman Police Department corporal.

Gustavo Perez Arriaga, 32, was arrested in the small town of Lamont, just east of Bakersfield and about 200 miles from where he’s suspected of killing Cpl. Ronil Singh after a traffic stop early Wednesday morning in east Newman.

Arriaga was on his way to Mexico, said Stanislaus County Sheriff Adam Christianson at a noon news conference Friday in Modesto as several of Singh’s grieving family members, along with other county employees and media from throughout California listened to details of the arrest.

more details emerged, including the arrests of Arriaga’s girlfriend and brother Friday afternoon, the recovery of the possible murder weapon and information on what led to the traffic stop.

Sgt. Tom Letras, spokesman for the sheriff’s department, said Ana Leyde Cervantes, 30, of Newman, was arrested Friday afternoon in Turlock. Meanwhile, in Livermore, Conrado Virgen Mendoza, 34, of Chowchilla, was taken into custody.

Like the five others arrested in the last 48 hours — three in Lamont, one in Hanford and the other in Modesto — the two were expected to be charged with accessory after the fact, or aiding and abetting.

Letras also said what investigators believe to be the suspect’s handgun used in the shooting was found in the last 36 hours, but could not give details as to where and exactly when it was recovered.