Widespread circulation of hundreds of sexually explicit photos among students at a Colorado high school via text messages has triggered a criminal investigation, multiple suspensions and the forfeiture of a football game, officials said on Friday.

Authorities in Canon City, about 90 miles (145 km) southwest of Denver, said at a news conference that following a tip, nude, semi-nude or sexually suggestive images were uncovered at the 1,100-student Canon City High School.

Canon City Police Chief Paul Schultz said investigators seized a phone containing "several hundred" inappropriate photographs from a student at Canon City High School.