The Denver Broncos will be without one of the NFL's top kickers for the first four games of the regular season.

The Denver Post reported early Sunday that Matt Prater was informed by the NFL that he must serve a four-game suspension for violating the league's substance abuse policy.

The league will announce the alcohol-related suspension on Monday, according to the Post. Harvey Steinberg, Prater's attorney, reached an agreement with the league and, therefore, an appeal is not expected.

After Prater was charged with driving under the influence in August 2011, he has been part of the NFL's alcohol program.

"No one feels worse about this than Matt Prater," Steinberg told the Post. "He feels terribly for his teammates. It's cost him personally, both professionally and financially. I wonder if we shouldn't take a second look at the policy when only a couple beers were consumed at home while he was on vacation. Having said that, the NFL under the constraints of the policy couldn't have treated us better."

Prater made 25 of 26 field goal attempts last season. One of those was a record 64-yarder against the Tennessee Titans in December. He also ranked second in the NFL in points with 150.

Prater's presence on special teams will be missed. The other kicker currently on the Broncos' roster is Mitch Ewald, a rookie from Indiana.

"I've made some mistakes," Prater said, according to the Post. "I'm accepting full responsibility. I'll learn from it and come back a better person. I want to apologize to my teammates, my coaches, the Broncos' organization and the fans."