Watsonville, California - Two planes collided in California at a municipal airport, while trying to land. At least two of the three people involved were killed, according to officials.

According to a tweet from the City of Watsonville, the accident occurred at Watsonville Municipal Airport shortly before 3 PM on Thursday.

Per The Associated Press, the city-owned airport in Northern California doesn't have a control tower to direct aircraft landing and taking off.

A two-engine Cessna 340, with two people on board, and a single-engine Cessna 152 with one on board, were involved in the crash. No one on the ground was injured.

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According to a statement from the FAA, the pilots were on their final approaches when the crash occurred. The FAA and National Transportation Safety Board are investigating the incident.

Witnesses told the Santa Cruz Sentinel that the planes were about 200 feet in the air when they crashed.

One man said he saw a twin-engine plane swerve hard to the right and hit the wing of a smaller, single-engine aircraft. "The smaller plane just spiraled down and crashed right here," he told the Sentinel.

The city of Watsonville expressed it condolences to the families and friends of the crash victims in a follow-up tweet.

Watsonville Mayor Ari Parker added: "We are grieving tonight from this unexpected and sudden loss. I want to express my deepest and most heartfelt condolences."