article: After the bus explosion, huge blasts were heard in the Gaza Strip as the Israeli bombardment of the Palestinian territory continued. Eleven people were killed in Gaza on Wednesday, the health ministry said. Unnamed Palestinian officials told news agencies a ceasefire between Hamas and Israel would be announced within hours. After eight days of exchanges of fire between Israel and Palestinian militants in Gaza, US Secretary of State Hillary Clinton and UN Secretary General Ban Ki-moon are now in Cairo for talks with the Egyptian president. There were "many details to work out" before a ceasefire could be reached, Mr Ban warned. By Kevin ConnollyBBC News, Tel Aviv In the immediate aftermath of the bus bombing, there was a palpable sense of shock hanging in the air around the scene. Israel's largest city has seen nothing like this for six-and-a-half years. One resident - when told that the news of the explosion broadcast from mosques in Gaza has been greeted with a sound of celebratory gunfire there - said that they need to celebrate this as some kind of victory because they have nothing else to offer but violence. A police helicopter still circled overhead and there were roadblocks at many main junctions around the scene as police hunted for the bomber or bombers seen running away from the scene. Paradoxically, the explosion and the waves of Israeli air raids on Gaza this morning do not necessarily mean that the search for a ceasefire is dead. It may mean that both sides are sending a signal that if a deal is agreed, they will be reaching it from what they regard as a position of strength. The search for a diplomatic solution reaches a critical phase this afternoon when US Secretary of State Hillary Clinton meets Egyptian President Mohammed Mursi - the only leader with effective lines of communication both to Israel and to Hamas. Earlier, she and UN Secretary General Ban Ki-moon held talks in the West Bank with the Palestinian Authority President Mahmoud Abbas. The US "strongly condemns" the bus bombing, Mrs Clinton said. Militants fired more rockets at Israel, while Israel renewed its naval artillery bombardment of Gaza late on Wednesday. Israeli Prime Minister Benjamin Netanyahu's spokesman Ofir Gendelman said on his Twitter account that the bus explosion in Tel Aviv was a "terrorist attack". The Ichilov medical centre in Tel Aviv said that of the 28 injured, 10 had suffered "body injuries" - three of them serious - three received "moderate-light" injuries including shrapnel wounds and burns, and the remainder were suffering from "anxiety". The bus was passing the military headquarters in the city at the time of the blast. Police say they believe the blast was caused by a bomb and they are still searching for a suspect. According to Israel's ministry of foreign affairs, the last bomb attack in Tel Aviv was in April 2006, when a suicide bombing on a restaurant killed 11. Hamas, the Islamist movement which has governed Gaza since 2007, has praised the attack but has not said it was behind the
summary: Twenty-eight people have been injured in a "terrorist attack" on a bus in Israel's commercial capital Tel Aviv, Israeli officials say.