PALO ALTO -- Two bodies were found in a burning home on Embarcadero Road by firefighters arriving at the scene around 7:15 p.m. Friday, authorities said.

It was not immediately known whether the single-alarm fire killed the two people or if they died by some other means, said Palo Alto police Lt. Zach Perron. He said the county coroner will ultimately determine the cause of death.

No immediate reason for the fire was given, although authorities believe it started in the kitchen.

The single-family home is in the 900 block of Embarcadero, between Greer Road and Morton Street. The stretch of roadway remained closed to traffic late Friday.

Perron said arson investigators will be on scene Saturday, which he called routine for house fires involving fatalities.

Robert Hof, who lives at a home behind the one that caught fire, said the blaze grew very quickly.

"It couldn't have been more than 10 minutes," he said. "We were cooking, with a window facing the house where we would have seen any flames at all, then we went and sat down and a neighbor came over to tell us it was burning."

He said at that point, 10- to 15-foot flames were coming out of a kitchen window of the home.

Hof said he knew of only one person who lived at the home, who he described as a man in his 50s.