A 65-year-old Gwinnett County man really wants another man dead, police said Monday. Despite being jailed following a murder-for-hire plot that failed, the Duluth man tried again to have the same man killed, investigators said.

Joseph Memar, of Duluth, was arrested June 28 and charged with criminal attempt to commit murder against his former business partner and neighbor, The Atlanta Journal-Constitution previously reported.

But an informant warned police of Memar’s plan to kill a 59-year-old Norcross man for $3,000. Memar was arrested by undercover officers following a meeting with the man he tried to hire, according to police.

Since being at the Gwinnett County jail, Memar has tried again to have the same man killed by spreading the word through other inmates, Cpl. Jake Smith with Gwinnett police told The AJC on Monday.

“A plain clothes officer met with Memar during his visitation time,” Smith said. “Memar offered the undercover officer $10,000 to kill (the man) and directed him to a source outside the detention center for payment.”

When detectives approached that source, he refused to participate in the plot, Smith said. Memar has been charged with a second count of criminal attempt to commit murder and remains in jail without bond.

The Gwinnett County Sheriff’s Office has transferred Memar to a maximum security detention area to minimize his contact with other inmates, Smith said.