(CNN) Four people were killed Monday when a small plane crashed into a residential neighborhood on Monday in Riverside, California, authorities said.
The Cessna 310 crashed about a half-mile northeast of the Riverside Municipal Airport, according to Ian Gregor, a Federal Aviation Administration spokesman. It had departed from Riverside en route to San Jose.
Riverside Fire Chief Michael Moore said the plane, which had five people on board, split apart when it hit the two homes, which reportedly had residents.
"We're unable to determine if they were victims from the residence or from the aircraft itself," Moore said.