Police say Columbia man sold drugs that led to deadly overdose

COLUMBIA, Mo. (KMIZ)

Prosecutors have charged a Columbia man with murder after he allegedly admitted to selling drugs that killed another man.

Mark Conn, 28, is charged with second-degree murder and selling drugs in connection with the Sept. 4 death on Spencer Avenue in Columbia. Conn was booked Monday into the Boone County Jail.

Police found a Facebook Messenger conversation between Conn and the man who overdosed, according to a probable cause statement. On Sept. 11, police arrested another man who allegedly told investigators he sold heroin to Conn.

Conn later told a different person, who was calling from the police station, that he sold drugs to the victim, according to the statement.

The Boone County Medical Examiner's Office said a high level of fentanyl in the victim's system contributed to his death, according to the statement.

Conn remained in the Boone County Jail on Tuesday without bond.