U.S. Attorney Donald J. Cazayoux Jr. is joining the Long Law Firm L.L.P. in early July, the firm announced Tuesday.

Cazayoux announced his resignation June 12 after three years as the head federal prosecutor for the Middle District, which includes the parishes of East Baton Rouge, East Feliciana, West Baton Rouge, West Feliciana, Livingston, Ascension, St. Helena, Iberville and Pointe Coupee.

David Guerry, a managing partner, said in the Long Law Firm press statement: “Don’s courtroom experience and leadership skills provide an exceptional correlation to Long Law Firm’s current practice areas.”

Long Law Firm was established 25 years ago by U.S. Sen. Russell B. Long.

Cazayoux will represent consumers, businesses and taxpayers in complex cases, including the oil spill claims process. He will continue efforts to steadfastly eliminate Medicare and Medicaid fraud through whistleblower actions, Guerry said.

Cazayoux is a former assistant district attorney for the 18th Judicial District in both Pointe Coupee and Iberville parishes.

He also had a private law practice in New Roads. He served as a state representative from 2000 to 2008 and as a member of the U.S. House of Representatives for the last six months of 2008.

But Cazayoux said last week he “probably never” would run for elected office again.

Cazayoux has worked 20 years as a civil and criminal litigator. During his tenure as U.S. Attorney for the Middle District of Louisiana, Cazayoux directed efforts to reduce healthcare and disaster-related fraud.

Cazayoux has served as the executive director of the National Center for Disaster Fraud, and he led several high-profile public corruption and corporate fraud cases as well as complex drug and gun cases during his term.