Former hostage Jean-Paul Kauffmann told his family that American hostages in Lebanon were treated brutally because they tried to escape, the French news agency Agence France-Presse reported Friday.

Kauffmann and diplomats Marcel Carton and Marcel Fontaine arrived in Paris Thursday after being freed Wednesday from three years of captivity. They were the last French hostages to be released from Lebanon.AFP quoted Kauffmann's sister, Marie-Genevieve Dagin, as saying he shared a cell recently with Frank Herbert Reed, who was "mistreated to the point of being left prostrate." Reed was kidnapped Sept. 9, 1986, and is one of nine American hostages in Lebanon.

Kauffmann, 44, Carton, 62, and Fontaine, 45, were in the Val-de-Grace military hospital for two days of examinations.

In a statement issued after the AFP dispatch quoting his sister, Kauffmann said he intended to speak fully at a news conference next week and did not want anyone speaking for him or relaying his impressions until then.

Dagin's telephone in Rennes was constantly busy Friday when The Associated Press tried to call.

She was quoted by AFP as saying her brother told her the American hostages held by the pro-Iranian Shiite Moslem group Islamic Jihad were "the object of brutality because they tried to escape."

The dispatch did not make clear whether Kauffmann specified which were mistreated for attempting to get away.

Dagin was also quoted as saying that she learned from her brother that Fontaine was briefly detained with Terry Waite, the special envoy of the archbishop of Canterbury. Waite disappeared Jan. 20, 1987, while on a mission in Lebanon seeking the release of the hostages.

Fontaine had said Thursday that he had shared a cell with American Terry A. Anderson, the longest-held foreign hostage. Anderson, 40, chief Middle East correspondent for the AP, was kidnapped March 16, 1985, in Beirut.

Kauffmann was kept in total darkness for 11/2 years, his sister was quoted as saying.