State Police in Vermont are working with Oklahoma authorities concerning the whereabouts of a man whose girlfriend was found dead last week.
An arrest warrant has been issued for 61-year-old Randal Gebo on charges of aggravated vehicle operation without owner consent and fraudulent use of a credit card.
Police say Gebo used Cook's credit card Saturday in the Perry area and in Buffalo, Wyoming on Sunday.
Cause of Cook's death remains under investigation.
The Associated Press contributed to this report.