A late-night crash on the Big Island killed a pickup truck driver, and police are still working out what caused it.

• A pickup heading south on North County Road in Mountain View went off the road and hit a tree Friday night.
• The truck flipped over, and the driver was found unresponsive when police arrived.
• He was pronounced dead a short time later.
• Hawaii County police have opened an investigation into the crash.

Outlook: Police are expected to release more details, including what led the driver to lose control.