WASHINGTON (AP) _ The Clinton administration announced the conclusion today of a three-year, six-country money-laundering investigation involving Mexican banks and drug-smuggling cartels.

It has resulted in 112 arrests and the seizure of $35 million in illegal drug proceeds and more than two tons of cocaine and four tons of marijuana.

The Treasury Department, in a statement, called it ``the culmination of the largest, most comprehensive drug money-laundering case in the history of U.S. law enforcement.''