Wyoming Highway Patrol

Published: Dec 18, 2013 11:32 AM EST

PLATTE COUNTY, Wy.- The man accused of killing his mother and brother in their Lehigh Acres home before fleeing to Wyoming, has signed paperwork for his extradition back to Southwest Florida.

The Platte County Sheriff's Office said Steven Thomkins is still being detained there, but he'll soon be heading back to Lee County to faces charges in the double murder.

Tompkins was on the run for almost a week with 19-year-old Joycelin Luck, who refused to sign her extradition papers. She faces two counts of accessory after the fact.