Calgary police are investigating after they say a man approached two girls and tried to grab one of them.

Police say the incident happened around 4:15 p.m. MT on Friday when the two girls, aged nine and 10, were walking on Sandstone Drive N.W. near Sandpiper Road. The man allegedly approached from behind and tried to grab one of the girls.

The girls were able to run away and police say the suspect is believed to have fled westbound on Sandstone Drive N.W. by foot.

One of the girls' parents called 911 and police conducted a search of the neighbourhood.

The suspect has not been located and is described as between five-feet, eight inches to six-feet tall, and weighing about 220 pounds.

He was wearing dark clothing including a black toque and a black scarf covering his face.

Police are still investigating and are asking anyone with information about the incident to call them at 1-403-266-1234 or Crime Stoppers anonymously at 1-800-222-8477.