COLORADO SPRINGS, Colo. (AP) — The mayor of Colorado Springs says authorities aren’t ready to discuss a possible motive of the gunman who attacked a Planned Parenthood clinic there but says people can make “inferences from where it took place.”

John Suthers says investigators have interviewed 57-year-old Robert Lewis Dear of North Carolina but says authorities still want to learn more about him, suggesting that his mental health was part of the investigation.

Before being elected mayor earlier this year, Suthers served as the state’s attorney general and said he investigated complaints of misconduct against Planned Parenthood. He praised the security staff working at the clinic Friday and said they were “incredibly helpful” in working with police to monitor the gunman’s whereabouts on surveillance video and advising on the building’s layout.