MIDLAND/ODESSA - Three area schools sheltered in place Tuesday morning.
Ector Junior High sheltered in place for 45 minutes Tuesday morning after students saw a man with a knife on the school's football field.
ECISD police officers secured the campus and searched for the man, but did not find him. The school went back to normal operations around 9:45 a.m.
In Midland, Lee Freshman High School and Pease Communications/Technology Academy sheltered in place as well.
MISD says United States Marshals were serving a federal warrant in the area. A police officer was placed at each campus as a precaution. Both campuses returned to normal operations around 11:35 a.m.