LAFAYETTE — The Lafayette police officer involved in a fatal shooting Friday night remains on paid administrative leave, an official said Monday.

The officer shot and killed Anthony J. Sonnier, 46, of Lafayette, during a traffic stop on Evangeline Thruway at 11:20 p.m., according to a news release by State Police.

The shooting occurred about 20 minutes after Sonnier stabbed a 74-year-old man, described by police as Sonnier’s friend, in the 100 block of Peggy Street, according to separate news releases by the Police Department and State Police.

The victim remains hospitalized and the motive behind the stabbing remains under investigation, said Cpl. Paul Mouton, spokesman for Lafayette police.

After the stabbing, Sonnier fled in the victim’s silver Toyota Camry, the Lafayette police news release said.

The officer spotted the suspect traveling north on Evangeline Thruway and stopped the vehicle at the road’s intersection with Castille Avenue, the police news release said.

As the officer approached the vehicle, Sonnier backed up and struck the officer with the vehicle, the news release said.

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The officer responded by firing multiple shots into the vehicle, striking Sonnier, the release said.

After the shooting, Sonnier’s vehicle struck a light pole at Northeast Evangeline Thruway and Chalmette Drive, the police news release said.

Lafayette police called State Police to investigate the shooting, standard procedure in officer-involved shootings, the news release said.

The officer was not injured, Mouton said.

The department has declined to release the officer’s name, but it may be released later.

The officer works with the patrol support division and has been with the city since January 2008, Mouton said.

Police Chief Jim Craft will decide when the officer will be allowed to return to work, Mouton said.