At least 137 people have been killed in a massive bomb attack in a busy area of the Somali capital Mogadishu today. Police say, hundreds more were wounded when a lorry packed with explosives detonated near the entrance of a hotel.Police official Ibrahim Mohamed told AFP news agency that the death toll is likely to rise. He said, there are more than 300 wounded, some of them seriously.<br/> <br/>It is one of the deadliest attacks in Somalia since the Islamist al-Shabab group launched its insurgency in 2007. BBC reports that it is not clear who staged the bombing, but Mogadishu is a target for al-Shabab militants battling the government. President Mohamed Abdullahi Farmajo Mohamed has declared three days of mourning for the victims of the blast.