Update 3:00 p.m.:
Police spokeswoman Jennifer Castro said that the juvenile reported to be in danger had been found safe at school and that no criminal activity was suspected. Police cars that had been part of the search were seen to be driving away.
Anchorage police officers are going door to door in Mountain View after what a police spokeswoman described as a "reported suspicious circumstance involving a juvenile" early Thursday.
The incident occurred between 6:15 and 7:15 a.m. near the Mountain View Car Wash at 3433 Commercial Drive, said Jennifer Castro, the police spokeswoman.
An employee of the nearby Smoke Shoppe, Nikita Sanders, said police officers told her a teenage or preteen girl had been heard "screaming bloody murder" and that the girl might have been in danger.
But police were not saying what was suspicious about the incident nor if they were aware of a suspect or a victim in the case. Someone reported it after the fact, Castro said. Officers were trying to figure out if the initial report was valid, she said.
"We don't want to be alarming to the community at this time and apologize for the current vague details," Castro said.
At about 1:30 p.m., 18 police cars, many of them unmarked, were parked at the car wash. The police department's crime scene investigation vehicle arrived a short time later. Officers could be seen looking at maps of the area.
By BENJAMIN BRASCH and CASEY GROVE