School resource officers with the Arvada Police Department arrested an armed student without incident at Arvada High School Sept. 14.

The incident began at the school shortly before 10 a.m. A tweet from the police department said officers and the Jefferson County R-1 School District received a report that an unidentified student was on campus.

The tweet said authorities found a pistol. The student was at a juvenile detention center, facing charges of a juvenile in possession of a handgun and unlawful possession of a weapon on school grounds.

The tweet said the school was "put on hold" for a brief period.