The Todd County Sheriff's Office says 22-year-old Dylan John Bennett was arrested on second degree murder charges at a hotel on Saturday in Cancun.

Authorities say Bennett had contacted County Sheriff Steve Och earlier in the day to say that he would turn himself in to the FBI. But a sheriff's office statement said the arrest by Mexican authorities came before the information could be communicated to them.

"The FBI is taking him into custody now and will transport him to Minnesota in the coming days," the statement said.

The bodies of 63-year-old former NFL lineman Barry Bennett and his wife, Carol, were found on Wednesday at their home in Long Prairie, a town of about 3,500 people 200 kilometres northwest of Minneapolis. Their deaths were ruled homicide from gunshots.

A criminal complaint says Dylan Bennett's car was at the scene with an empty box for a 9 mm handgun inside, along with ammunition.

Investigators believe the Bennetts were killed on Monday. The complaint said Carol Bennett, who would've been 64 on Thursday, was shot multiple times in the back and torso. Barry Bennett, 63, was shot multiple times in the torso and head.

According to the criminal complaint, Barry Bennett told the Todd County Sheriff's Office in December that Dylan had expressed thoughts about killing his parents while he was in a mental health treatment facility.

Barry Bennett played 11 seasons with the New Orleans Saints, the New York Jets and Minnesota Vikings.

Australian Associated Press