Police in the state of Colorado say at least 14 people were shot to death and around 50 were wounded in a shooting at a movie theater in a suburb of Denver.

Authorities say the midnight premier of “The Dark Knight Rises, the latest Batman movie, had just begun Friday at the Century 16 theatre in the city of Aurora, when a masked man at the front of the theatre stood up, faced the packed crowd, threw a tear gas canister and started randomly shooting. Witnesses said he fatally shot an infant at point-blank range.

Police say they immediately apprehended the shooter, who had a rifle and one handgun. Aurora Chief of Police Daniel Oates told a news conference that only one man was involved, contrary to initial reports that there may have been an accomplice.

Authorities called in a bomb squad and are searching the theatre and the shooter's home in Aurora for explosives.