COLORADO SPRINGS, Colo. (KKTV) - UPDATE (1 p.m.): District 11 says the lockout has been lifted.
PREVIOUS (12:48 p.m.): Palmer High School is on lockout due to police activity in Acacia Park.
Police tell 11 News they do have someone detained in connection with a call downtown, but didn't have many other details. A person was detained, according to a sergeant 11 News spoke with.
During a lockout, school goes on as usual inside the building, but access in and out of the building is restricted.
All students and staff are safe.