Authorities say a 70-year-old Mississippi oncologist is accused of hiring two men to kill the lawyer who represented his ex-wife when they divorced in the 1990s.

Greenwood city police told the Greenwood Commonwealth that Dr. Arnold Smith of Greenwood and William Paul Muller, a 54-year-old brick mason from Morgan City, were arrested Sunday and held without bond on a charge of conspiracy to kill attorney Lee Abraham.

Police said 23-year-old Keaira Byrd and 25-year-old Derrick Lacy entered Abraham's law office Saturday night, but agents from the Mississippi attorney general's office were waiting.

Leflore County Coroner Debra Sanders said Byrd was fatally shot during an exchange of gunshots. Sanders said Lacy was shot in the lower back.

She said one of the agents suffered a less-serious wound.

Mayor Carolyn McAdams said Abraham was not hurt.