A Menlo Park man in his late 70s shot and killed himself Friday afternoon in a parking lot of Palo Alto's Baylands Nature Preserve, Palo Alto police Sgt. Sandra Brown said.
The name of the man is not being released.
There was an adult witness to the 4 p.m. suicide, Sgt. Brown said.
"There were a lot of people around," she added. "We had to close the park down for awhile."