LITTLE ROCK — Former legislative audit chief Charles Robinson has been named the new state treasurer.

Gov. Mike Beebe made the announcement Wednesday morning. Robinson worked for 34 years in the Division of Legislative Audit, serving 28 years as the legislative auditor before retiring in 2007.

Robinson replaces Martha Shoffner, who stepped down last week after she was charged with extortion by federal prosecutors.

Robinson will fill the remainder of Shoffner's term, which ends in January 2015, and can't run for the post next year. Shoffner, a Democrat, was re-elected in 2010.

Prosecutors say Shoffner accepted at least $36,000 in cash in exchange for steering state business to a bond broker. Shoffner's attorney has said she plans to plead not guilty at the appropriate time.