(CNN) -- Five people in rural New York have been charged with assaulting and robbing Mexican migrant workers, authorities said Sunday.
Arrest warrants have been issued for four more people, the Wyoming County Sheriff's Office said in a news release.
Melissa Cotton, Timothy Kuhn, Gunner Northrup, Allen Seckler and Brittany Wiedemann are being held in lieu of bail on robbery charges, police said. Four of the suspects face one count so far; Seckler faces three charges. It wasn't immediately clear whether they had retained legal representation.
At least three violent robberies had been reported to the sheriff's department. In one the victim was strangled unconscious and his wallet stolen along with other items. He gave police a description of the suspects. In another, the victim suffered head injuries.
The five suspects were in a car pulled over two weeks ago by a deputy. They were questioned by detectives and released but items discovered in the car, including a shoe, led police to two other victims.
Wyoming County is just southeast of Buffalo.