A Lafayette man riding a motorcycle was killed Wednesday when a pickup truck merged in front of him as they both headed south on Interstate 49 in St. Landry Parish, State Police said.

Donald Royer, 67, was riding a Harley Davidson near milepost 14 when Willie Smith, 62, of Church Point, merged his truck in front of Royer and he lost control while trying to stop the motorcycle, Master Trooper Brooks David said in a news release.

Royer was wearing a helmet, but died of his injuries at a hospital. Impairment is not thought to be a factor in the crash, David said.

State Police plan to file charges against Smith, though the crash is still under investigation, David said.