Driver was teen sought after slaying, authorities say

JOHNSTON, Iowa (AP) -- Authorities think a motorist who killed himself Wednesday after a short pursuit on a Colorado highway is a 16-year-old they had been searching for since a house sitter and a social worker were found shot to death at his Iowa home.
The body was not immediately identified, but Mesa County Sheriff's spokeswoman Wendy Likes said "everything per our investigation leads us to believe" it is that of Tyler Pirtle.
Police began searching for Pirtle on Tuesday after the bodies of Sarah Dahlke, 21, of Marshalltown and Greg Gaul, 41, of Des Moines were found at the home in Johnston, an affluent Des Moines suburb.
Dahlke was watching Pirtle, the house and pets for the house's owners, Pirtle's father, Matthew Pirtle, and Sarah Collinson, who were in the Cayman Islands at the time of the shootings.
Gaul was a social worker and a father of six. Police did not say why he was at the house, but a spokesman for Gaul's family said the Pirtles were among his clients and that he had received a "strange call" to go to the house that morning.