Updated 3:44 p.m. on May 22, 2018

UPDATE: WEST ALLIS, Wis. (CBS 58) -- West Allis Police confirm that the lockout has been lifted at all three schools.

Police searched the nearby area but did not locate the suspect.

Anyone with information is asked to call the West Allis Police Department.

------

WEST ALLIS, Wis. (CBS 58) -- A lockout has been ordered at three West Allis schools while police search for an armed robbery suspect.

The lockout has been ordered at Central High School, Franklin Elementary School, and Jefferson Elementary School.

A lockout takes place when the danger or perceived threat is outside of the school.

According to the West Allis-West Milwaukee School District, police are searching neighborhoods nearby the schools for a suspect wanted for an armed robbery.

Until the all clear is given by police, students must remain in the building and no one is allowed in the building. Busses will also be delayed.

"As always the safety and well-being of our students is our main priority. We will update you as soon as possible regarding this situation," the school district said in a statement.

According to West Allis Police, the suspect is described as a black male wearing a tan or gray hoodie, gray stocking cap, and dark sunglasses. 

Stay with CBS 58 News for more information on this developing story.