A 64-year-old Reston man was killed early yesterday when the car he was driving was struck by a Fairfax City police cruiser responding to a burglary alarm, police said.

The victim was identified as Henry H. Esterly, who along with other family members had been attending a prewedding party for his daughter. Esterly's wife, a third passenger in the car and the police officer suffered injuries in the crash, which occurred about 12:30 a.m. as Esterly attempted to make a left turn from the parking lot of the Old Budapest Restaurant at 10195 Lee Highway.

Esterly was pronounced dead on arrival at Commonwealth Hospital. His wife, Joanna, 59, was admitted to the hospital in satisfactory condition. Lewis Durham, of San Francisco, who was riding in the Esterlys' 1974 Ford Maverick, and the police officer, Hobart C. Peacher, were treated for Njuries and released from Commonwealth.

A police spokesman said Peacher, 26, a member of the Fairfax City force one year, was answering a backup call from another officer responding to a burglar alarm at a convenience store about a mile from the scene of the collision. The alarm turned out to be false, the spokesman said. An investigation of the incident is under way.

The spokesman said officials do not know how fast Peacher's automobile was traveling but that his police lights were flashing and his siren was on when the accident occurred.