The suspected triggerman in the execution-style killing of a Hailey man late last year has been captured in Twin Falls, according to the Gooding County prosecutor's office.

Carlos Villanueva-Martinez, a 37-year-old Gooding resident, was arrested early Sun-day morning in Twin Falls by Good-ing and Twin Falls County sheriff's deputies.

Police allege Villanueva-Martinez and Jesus Valencia-Bolanos, a 23-year-old Gooding resident and acquaintance of Villanueva-Martinez, were involved in the killing of Gustavo Flores-Quintana, a 30-year-old Hailey resident who was shot execution-style in Gooding County in early November.

Police suspect the men, both illegal immigrants, then stole Flores-Quintana's 1996 Pontiac Grand Am and fled to California. Police say the killing may have been drug-related.

A duck hunter discovered Flores-Quintana's body Nov. 9 near a gravel pit in a remote part of the county. An autopsy revealed he'd been killed by a single .22-caliber bullet wound to the back of the neck.

Valencia-Bolanos was captured in December in California near the abandoned Pontiac and charged this month with grand theft and accessory to murder.

Villanueva-Martinez, who was arrested on a $100,000 warrant, will appear in Gooding County court Tuesday to face grand theft charges.

Gooding County Prosecuting Attorney Calvin H. Campbell declined say whether Villanueva-Martinez is likely to face additional charges in relation to the killing.

It is unclear why Villanueva-Martinez returned to the area, said Gina Mulder, a spokeswoman for the Gooding County prosecutor's office.

Matt Christensen may be reached at 735-3243 or at matt.christensen@lee.net.