Soviet Foreign Minister Andrei Gromyko indicated some public support here tonight for U.S. demands that Iranian militants free 49 Americans being held hostage in the U.S. Embassy in Tehran.

At a news conference here, Gromyko was asked if Moscow was ready to show solidarity with the U.S. position. He said his country always stands by international conventions, particularly respect for the status of foreign diplomats, and that the Soviet postion had been made clear to the United States and in the United Nations Security Council.

"I would like to express the hope that a solution satisfactory to both sides will be found," Gromyko said. "I hope that both sides will show restraint, and that emotions will not spill over the edge."

Speaking in Madrid Wednesday, Gromyko referred to the Iran situation as an "internal problem" of that country and said that Soviet policy was not to "interfere."

In Moscow, the Soviet news agency Tass reported today that U.S. commandos disguised as oil company workers have arrived at the Saudi Arabian air base in Dahran.

Tass said the men were members of "special helicopter-borne forces" and were flown in wearing civilian clothes in "several U.S. Air Force transports." It said their presence at the base was "carefully concealed."

The agency also quoted American newspapers on possible military action against Iran, particularly an "appeal for firmness" to President Jimmy Carter in the New York Daily News and reports on various military options open to the United States reported in The Washington Post.