A powerful Israeli airstrike targeted central Beirut early on Saturday, security sources said, shaking the Lebanese capital as Israel pressed its offensive against the Iran-backed Hezbollah group.At least four people were killed, and 23 others injured in the strike, according to Hezbollah’s al-Manar TV, citing Lebanon’s Health Ministry.Several powerful blasts shook Beirut at around 4 a.m. (0200 GMT), Reuters witnesses said. At least four rockets were fired in the attack, two security sources said.Later, Lebanon state media said at least five Israeli missiles struck a residential building in the heart of Beirut.“Beirut, the capital, woke up to a horrific massacre, as the Israeli enemy’s air force completely destroyed an eight-story residential building with five missiles on Al-Mamoun Street in the Basta area,” the National News Agency reported. AFP journalists heard at least three large explosions.For all the latest headlines follow our Google News channel online or via the app.Sirens