2 small planes collide in San Diego

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An undetermined number of people died Sunday when two small planes collided in midair northeast of Brown Field in San Diego, authorities said.

A twin-engine Sabreliner and a single-engine Cessna 172 were inbound to Brown Field when they collided about 11 a.m. PT, FAA spokesman Ian Gregor said.

“There are no survivors,” San Diego Fire Department spokesman Lee Swanson told CNN. “We are checking with the airports to determine how many people were on each plane.”

The FAA and NTSB are investigating, and the number of people aboard and the conditions of passengers were not known.

The crash sparked a grass fire, but both the ensuing debris fire and grass fire have been put out, Swanson said.

“There is (a) fairly large crash scene,” Swanson said. “There is debris scattered about a quarter of a mile.”

CNN’s Vivian Kuo contributed to this report.

By Ralph Ellis