Livermore police have located the gravel truck driver who fatally struck a bicyclist on Stanley Boulevard late last month and left the scene without stopping, according to a department spokesperson.

The driver, whose name has not been released publicly, is cooperating with the investigation into the collision that killed Livermore resident Christine Boyle on Dec. 21, according to Officer Taylor Burruss.

"This collision is still under preliminary investigation so we are unable to release further details as to the driver's identity, their statement, who is at fault, or whether criminal charges will be sought at this point," Burruss told the Weekly this week.

Boyle, 63, was riding off the sidewalk on eastbound Stanley Boulevard just after 8 a.m. Dec. 21 to cross straight at the intersection within the crosswalk, when at the same time a gravel truck with trailer was making a right turn from Stanley toward the Isabel Avenue/Highway 84 connector, police said at the time.

A witness told Boyle's family that the avid cyclist attempted to avoid a serious collision by pushing off the truck but she fell and was run over by the tires. Boyle was treated at the scene and transported to Eden Medical Center in Castro Valley, where she died that afternoon.

The trucker drove away from the scene without stopping, and police previously said they were looking into whether the trucker was aware they had hit somebody.

Boyle's death on Dec. 21 marked the beginning of a difficult stretch for the Livermore community, the first of three fatal crashes that killed five people in less than 34 hours on the week of Christmas.