LA CANADA FLINTRIDGE — A motorcyclist died Saturday after crashing on Angeles Crest Highway, according to the California Highway Patrol.

The rider, initially described as a man in his late 30s, was pronounced dead at Huntington Hospital in Pasadena just over an hour after the 11:22 a.m. solo-motorcycle crash at mile marker 27.65 of Angeles Crest Highway, about four miles north of the 210 Freeway, CHP Officer Christian Cracraft said.

The circumstances of the crash were being investigated by the Altadena office of the CHP.