A three-alarm fire early Tuesday damaged a San Carlos warehouse containing memorabilia belonging to rocker Neil Young, authorities said.

The blaze was reported at 2:55 a.m. by security personnel at the warehouse Young rents at 593 Quarry Road west of Highway 101, said Belmont-San Carlos Fire Chief Doug Fry. Firefighters found flames shooting through the roof and doused the fire within 15 minutes, authorities said.

Young kept guitars, paintings, vintage cars and cases of other memorabilia at the 10,000-square-foot warehouse. About 70 percent of the belongings have been salvaged or are salvageable, Fry said.

"Neil Young did come down to the scene and was very appreciative of the firefighters for saving as much as they could," said Fry, who missed meeting the star musician.

"I'm a fan," he said. "I would have loved to have met him."

The cause of the fire is under investigation, but it did not appear to be suspicious, Fry said. The blaze caused at least $1 million in damage, authorities said.