Ryan Larson, the man accused of killing Cold Spring-Richmond Police Officer Tom Decker last week, was released without charges on Tuesday, Fox News reported.
Authorities released Larson, 34, after stating sufficient evidence had not been gathered to convict him, the Star Tribune reported.
"Our agencies have reviewed the investigative data collected thus far and must act within the time allotted by law, within the constraints of the law, and based upon the facts known at this time," said Stearns County Attorney Janelle Kendall.
Larson told the St. Cloud Times that the police have the wrong man. He said he was asleep at the time of the shooting.
"Basically, they have no evidence whatsoever that points in my direction," Larson told the St. Cloud Times in a phone interview.
Police have not yet found the shot gun that killed Decker, Minnesota Public Radio reported.
Larson told the police he had met Decker a few times while working as a bartender, the Star Tribune reported.