A 45-year-old Baltimore man has been arrested and charged in a double fatal pedestrian accident that killed a mayor from Alaska and her mother, police said.

Two women were struck while crossing the street in the intersection of 7th Street and Pennsylvania Avenue Northwest on Dec. 19.

RELATED: Mayor of Alaskan town and her mother died after being hit by a bus near National Mall

Investigators said at 9:39 p.m. a 2013 Provost H3 passenger bus was traveling northbound on 7th Street Northwest when the driver made a left hand turn onto Pennsylvania Avenue Northwest and struck both women in the crosswalk.

The pedestrians, identified as Monica Adams Carlson, 61, of Skagway, AK, and her 85 year-old mother, Cora Louise Adams, of Elbe, WA, were taken a hospital with life-threatening injuries, police said. Both women died.

Gerard Derrick James was arrested Thursday and charged with involuntary manslaughter, police said.