BBC News with Marian Marshall. It's feared that many people have died after a residential tower block in London was engulfed overnight in a huge blaze. Police have confirmed 6 fatalities but expect the number to rise. Fire crews are searching the smoldering shell of the Grenfell Tower. More than 70 people have been treated in hospitals. The Prime Minister Theresa May said she was deeply saddened by the loss of life. A gunman has opened fire on Republican members of Congress during a baseball practice near Washington. At least 5 people were wounded, including the House majority whip Steve Scalise. He was said to be in a stable condition before surgery. Two police officers were also among the wounded. They returned fire. Another Congressman said there would be a massacre without them. United Nations war crime investigators say the increasing air strikes by the U.S.-led coalition in Syria on the Islamic State group's de facto capital Raqqa is causing a staggering loss of civilian life. The campaign group, Human Rights Watch, has also raised questions over the use of white phosphorus in artillery fire by ground forces battling against IS in both Raqqa and Mosul. Iraqi forces said they had driven back a large-scale counterattack in Mosul by fighters from the Islamic Stare group. The jihadists attacked a district to the south of the old city, which had been recaptured by Iraqi forces several months ago. A police commander said many of the jihadists were wearing suicide vests. The International Criminal Court has called for the immediate arrest and surrender of Saif al - islam Gaddafi, who was freed by militia in Libya last week. The son of the late Libyan leader Muammar Gaddafi is accused of crimes against humanity. Legislators in Ireland have elected the son of an Indian immigrant, Leo Varadkar, as the country's new Prime Minister. At 38, Mr. Varadkar is the youngest and first openly gay person to hold the post. BBC World Service News.