DALLAS (AP) — The gunman who killed seven people in West Texas over Labor Day weekend was arrested in 2001 for trying to break into a woman's bedroom after threatening to kill her brother, and hospital staff later determined he had "suicidal tendencies," according to arrest reports obtained by The Associated Press.

A day after the attempted break-in, Seth Ator, then 18, jumped from a second-floor window to evade authorities in Waco, a city about 105 miles (169 kilometers) south of Dallas. He was eventually taken into custody and hospitalized, the documents show.

It is unclear whether the event...