The speaker of Iran's parliament has brushed off a request by four U.S.-allied nations to allowed an international mission to visit the 52 American hostages, saying the captive Americans had "leaked" information to past visitors, the official Pars news agency reported. "

Speaker Hojatoleslam Ali Akbar Hashemi Rafsanjani received ambassadors and senior diplomats from Japan and three nations representing the European Common Market -- Italy, Belgium, and the Netherlands -- on Sunday. It was the second delegation in four days to call on the speaker witharequest for swift parliamentary action on the fate of the hostages.

Dutch Ambassador Willi Campagne, speaking for the delegation, described the seizure of the U.S. Embassy and hostages in Tehran last Nov. 4 as a violation of international law, appealed for the hostages' release, and asked for the visitation.

But Rafsanjani was reluctant to allow visits, saying that in previous visits the hostages had "leaked" information that was used for the failed U.S. commando rescue attempt in April, the Japanese news service Kyodo reported. It has been four months since the hostages have been visited by outside observers.

Rafsanjani was quoted as chiding the U.S. allies for being dominated by the United States. On the question of international law, he said "These international laws favor the big powers." The speaker accepted letters from the envoys and said they would be stuided by the parliament.

In another development, Iranian Foreign Minister Sadegh Ghotbzadeh summoned the British charge d'affaires in Tehran, Arthur Wyatt, and demanded an "immediate solution" to the continued holding of 40 Iranian demonstrators in British jails. British magistrates yesterday recommended that three of the demonstrators be deported.

Iran also gave the Soviet Union 24 hours to close one of its two consulates and reduce staff at its embassy in Tehran. The ultimatum, delivered Sunday, was accompanied by a notice that the Iranian government had decided to close it consulate in Leningrad.

Iran complained recently to the Soviets that they were committing "unpardonable provocations" along the border, supporting Kurdistani rebels, and "leading activities against the Islamic republic" from their embassy in Tehran.