Lebanon says it was struck by shelling from Syria, after three Syrians were killed in Lebanon, escalating tensions between Beirut and Syria’s new Islamist-led government.

Lebanon's president on Monday ordered troops to retaliate for gunfire from Syria amid a flare up of cross-border tensions. Violence along the frontier has spiked between the Syrian military and

BEIRUT — Lebanon’s president on Monday ordered troops to retaliate for gunfire from the Syrian side of the border after more deadly fighting erupted overnight along the tense frontier.

A doctor from Lebanon who arrived at the Boston airport was deported without explanation, after government lawyers said border officials did not get word she was to stay in the U.S. for a hearing.

A federal judge abruptly canceled a court hearing Monday morning for a Brown University assistant professor and doctor who was deported over the weekend from Boston to Lebanon after the judge had ordered immigration officials to give him notice first.

Court documents say Customs and Border Protection violated a court order to halt the deportation of Dr. Rasha Alawieh, which the agency allegedly carried out “without any justification.”