Bail is set at $2 million for a 22-year-old southwest Idaho man prosecutors say is involved in the killings of a former Arizona power company executive, his wife and their adult son in the foothills outside Boise.
Adam M. Dees, of Nampa, appeared alert and relaxed during his appearance Thursday in Ada County Court via video feed from jail.
Prosecutors say police arrested Dees on Wednesday at an electronics store after he bought a car stereo using one of three credit cards belonging to the victims.
He's accused of grand theft and forgery but not murder.
The Ada County coroner's office identified the victims as 80-year-old Theodore M. Welp, 77-year-old Delores E. Welp and their son, 52-year-old Thomas P. Welp. The cause of their deaths wasn't released.
They were found dead Tuesday.