PHOENIX (AP) -- Authorities say a man who barricaded himself in his car and threatened suicide for more than three hours on a highway northeast of Phoenix has fatally shot himself.
Maricopa County Sheriff's officials say they had been communicating with the man but he committed suicide about 6 p.m. Tuesday.
The man's name and age weren't immediately released and authorities didn't say why he was suicidal.
Sheriff's officials say the barricade situation began about 2:45 p.m. near the county line about 40 miles northeast of Phoenix.
The highway was closed off in both directions from Sun Flower to State Route 188.
State Route 87 is also known as the Beeline Highway and is one of the main routes between Phoenix and Payson.
Subject on SR 87 barricade has committed suicide. MCSO detectives are on scene investigating, roads will open but restrictions are in place— Deputy Enriquez (@DeputyEnriquez) August 10, 2016
SR 87 is closed now between the Bush Hwy and SR 188. No estimated time to reopen; use an alternate route. pic.twitter.com/O3SKt1YvXr— Arizona DOT (@ArizonaDOT) August 10, 2016
MCSO deputies are working a barricaded man threatening suicide in his vehicle on SR 87 near the county line, please avoid the area.— Deputy Enriquez (@DeputyEnriquez) August 9, 2016