SIOUX FALLS, S.D. (AP) - A retired Sioux Falls police detective who played a pivotal role in solving the 1990 murder case of 9-year-old Becky O'Connell has received the first William J. Janklow Award for the Law Officer of the Year.

The Argus Leader reports (http://argusne.ws/SXeF9G) that Mike Larson was honored with the $1,000 award during this week's 31st annual South Dakota Law Enforcement Appreciation Dinner.

Larson followed an anonymous tip that led him to Donald Moeller, who was executed for the crime last month.

Larson says he's proud to have a hand in catching Moeller, but he credited the team of police officers and detectives who worked hard on the O'Connell case.

Authorities say Moeller kidnapped O'Connell from a Sioux Falls convenience store, drove her to a secluded area and raped and killed her.