WASHINGTON — A military investigation says up to a dozen service members brought women, likely prostitutes, to their hotel rooms in Colombia, shortly before President Barack Obama arrived in the country for an April summit.

The report provided to The Associated Press Friday reveals new details about the conduct of servicemen during the prostitution scandal that engulfed both military and Secret Service personnel. Nine servicemen have been punished so far.

The investigation says hotel staff complained to U.S. officials that military members had female guests in their rooms after 6 a.m., a violation of hotel policy. They also complained that dog handlers allowed their dogs to soil hotel linens and other public areas around the building.