REDLANDS, Calif. -- Authorities say a California Highway Patrol motorcycle officer was killed during a pursuit that reached speeds of 100 mph.

The CHP says seven-year veteran Tom Coleman was pronounced dead at the San Bernardino County intersection where he smashed into a tractor-trailer around 6:30 a.m. Friday.

CHP spokesman Daniel Hesser says the four people in a car Coleman was pursuing for vehicle code violations have been arrested on undisclosed charges.

Coleman was married with two children. His age has not been released.

This is the second CHP motorcycle officer involved in a serious crash this week. An officer remains in critical condition after a driver crashed into him and a car he had pulled over on a Los Angeles freeway.