BOGOTA, Colombia - Colombia is investigating an American consultant and three other foreigners for alleged ties to leftist rebels.

Chief Prosecutor Mario Iguaran told reporters yesterday that among those being investigated are two Ecuadorans, a Venezuelan, and the American, who was identified only as James C. Jones.

The inquiry was prompted by documents Colombian authorities found on laptops captured during a March raid on a rebel camp in Ecuador.

The prosecutor also wants the Supreme Court to probe three Colombian lawmakers, including Sen. Piedad Cordoba, who helped Venezuelan President Hugo Chavez broker hostage releases.