A Texas man has been arrested in southeastern Oklahoma for trying to sell a 25-gallon drum of cyanide to an FBI informant.

Court documents show Jeffrey Don Detrixhe of Higgins, Texas, was arrested Monday afternoon in the Holly Creek area north of Idabel on a complaint of possession or transfer of a chemical weapon.

An affidavit filed by FBI Special Agent John Whitworth says agents taped conversations in which Detrixhe told an informant he had enough cyanide to "kill a city."

He allegedly offered to see the cyanide, a thermal imager and a fully automatic Russian-made AK-47 assault rifle for $10,000.

FBI spokesman Mark White, in Dallas, says some cyanide was found at Detrixhe's home but he would not comment on how much was found.

The Centers for Disease Control and Prevention describes cyanide as a "rapidly acting, potentially deadly chemical" which prevents the body from processing oxygen. It is also used in manufacturing, metallurgy and pest extermination.

Detrixhe's first court appearance was Wednesday.