A man was arrested Friday afternoon outside Lamar Elementary School with a loaded .22-caliber handgun tucked inside the waistband of his pants.

Omar Ahmad Gray, 22, of the 1700 block of Hicks Street in Harrisburg, was charged with possession of a concealed weapon and possession of a weapon on school property, according to a sheriff's office report.

The gun was discovered when a school board police officer spotted four men leaning against a fence outside Lamar, Public Information Director Louis Svehla said. The officer called for backup from Tubman Middle School.

Officer Patrick Paquette responded, approaching from a back street, the report said. Mr. Gray, who was standing at a corner on school grounds, reached for his waistband and ran after seeing the officers. Officer Paquette chased after him and arrested him.

According to the report, Mr. Gray was waiting for his girlfriend, a student at the Academy of Richmond County. Lamar is on Baker Avenue across the street from Richmond Academy, where a former student was arrested last week after a sawed-off shotgun was found near campus.

Countywide, there were four guns found on school campuses last year, according to school tribunal reports.