A Walnut Creek restaurant's liquor license was suspended after a state investigation found disturbances at the business were draining police resources, with more than 200 calls over a 15-month period, according to the California Department of Alcoholic Beverage Control.

The 20-day suspension began April 17 at Crogan's Sports Bar and Grill, 1387 Locust St., and the establishment will also be placed on probation for two years. State officials said the restaurant had been operating a "disorderly house," resulting in a drain on law enforcement services.

"The premises has been the focus of numerous calls for police services from the Walnut Creek Police Department for fights, assaults, public drunkenness and other public nuisance issues," the ABC announced Wednesday.

The state agency said there were more than 200 calls for service to the restaurant from August 2012 to November, 2013. More than 30 of those calls warranted a criminal report by police.

According to the agency, the business accepted the department's penalty.

Crogan's license was suspended for 10 days in 2008 for selling alcohol to a minor and it was suspended 15 days in 2010 for serving an obviously intoxicated patron and allowing public drunkenness, the ABC reported.

The Walnut Creek restaurant has been in operation since 1978.

Contact Natalie Neysa Alund at 510-293-2469. Follow her at Twitter.com/nataliealund.