At least three people were killed in an attack at a community college in Wyoming on Friday, prompting a lockdown at the school as police secured the scene at its science center, the Casper Star Tribune reported.

NBC News reported that the attack at Casper College may have been carried out by a bow and arrow style weapon and that a male faculty member was killed and a seriously injured person was taken into custody and was possibly a suspect.

The Star Tribune did not identify the dead, but had earlier quoted a college spokesman as saying the gunman was "possibly deceased."

The school said on its website it had issued an emergency alert and advised against travel to the campus until further notice.

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