UNITED NATIONS, May 5 (Reuters) - U.N. Secretary-General Ban Ki-moon on Sunday voiced alarm at reports Israel has struck targets inside Syria, but said the United Nations was unable to confirm whether any such attacks had taken place.
"The Secretary-General expresses grave concern over reports of air strikes in Syria by the Israeli Air Force," Ban's press office said in a statement.
"At this time, the United Nations does not have details of the reported incidents," it said. "Nor is the United Nations in a position to independently verify what has occurred."
It added that Ban "calls on all sides to exercise maximum calm and restraint, and to act with a sense of responsibility to prevent an escalation of what is already a devastating and highly dangerous conflict." (Reporting by Lou Charbonneau; Editing by Sandra Maler)