ALLENTOWN, Pa. -

Two schools in the Allentown School District were put on lock down briefly Tuesday morning due to police activity in the area.

Both South Mountain Middle School, 709 W. Emaus Ave., and Hiram W. Dodd Elementary School, 1944 S. Church St., went into lock down mode before 9 a.m., , according to district officials. It was lifted less than 20 minutes later.

Allentown police asked the schools be placed on lock down as a precautionary measure, said Kim Golden Benner, who represents the school district.

Officers were in the 1900 block of South Law Street to check on the welfare of two people, police said.

When police arrived, there was a delay in making contact with the residents, which heightened concern among police, according to Capt. William Lake.

After several attempts, police did finally make contact with the couple in the home, and both were fine, Lake said.

The incident is still under investigation.

Law Street is only a few blocks away from the two schools.