BEIRUT (AP) The Israeli military struck Hezbollahs headquarters in Beirut on Friday in a series of massive explosions that targeted the leader of the militant group and leveled multiple high-rise apartment buildings. The biggest blast to hit the Lebanese capital in the past year appeared likely to push the escalating conflict closer to full-fledged war. At least two people were killed and dozens were wounded, Lebanons health ministry said.

Hezbollah leader Hassan Nasrallah was the target of the strikes on the groups headquarters, according to two people familiar with the matter who requested anonymity, including one U.S. official. The Israeli army declined comment. It was not immediately clear if Nasrallah was at the site, and Hezbollah did not comment on the report.

After the strikes, Prime Minister Benjamin Netanyahu abruptly cut short a visit to the United States to return home. Hours earlier, he addressed the U.N., vowing that Israels intensified campaign against Hezbollah over the past two weeks would continue further dimming hopes for an internationally backed cease-fire .

News of the blasts came as Netanyahu was briefing reporters after his U.N. address. A military aide whispered into his ear, and Netanyahu quickly ended the briefing.

Israeli army spokesman Rear Adm. Daniel Hagari said the strikes targeted the main Hezbollah headquarters, saying it was located underground beneath residential buildings.

The series of blasts at around nightfall reduced six apartment towers to rubble in Haret Hreik, a densely populated, predominantly Shiite district of Beiruts Dahiyeh suburbs, according to Lebanons national news agency. A wall of billowing black and orange smoke rose into the sky as windows were rattled and houses shaken some 30 kilometers (18 miles) north of Beirut.