A 46-year-old Calgary man is accused of sexually assaulting two teenage girls.

The girls were 13 and 16 at the time of the alleged assaults, police said.

The incidents happened between July 2007 and August of 2010.

Police began investigating after one of the girls made a complaint last year.

During that investigation, detectives learned of a second potential victim, police said.

Police believe the suspect who lived in the same community as the girls worked to develop a relationship with his victims before forcing them to engage in sexual acts over a prolonged period.

 Staff Sgt. Beverly Voros said the girls lived in the same community and knew of each other, but were "targeted" separately.

"They were invited over," Voros said. "They were groomed. Basically he would invite them over, and within the grooming, he would offer free massages at which time he would sexually assault the girls." 

The suspect was arrested and charged last Monday, and then released on bail.

His next court appearance is set for June 26.