Dozen slain in Baghdad brothel May 23, 2013 -- Updated 0042 GMT (0842 HKT) (CNN) -- Gunmen in Baghdad shot dead at least 12 people in a brothel Wednesday, authorities said. This comes amid an uptick of violence across Iraq, most prominently Sunni-Shiite sectarian strife. But religious extremists from both persuasions who have targeted the prostitution business over the last decade have claimed many lives. No one has claimed responsibility and police are investigating. Read more: Are dark days returning to Iraq? The incident occurred in Zayouna, a religiously mixed neighborhood with several brothels. Police say seven gunmen shot dead five men and seven women and wounded a man and a woman. One of the gunmen wrote "Wanted" on the wall of the house. Bombings in Iraq kill 19 people as worries over sectarian violence grow May 23, 2013 -- Updated 0227 GMT (1027 HKT) The nature of the London attack is not unprecedented, says one terror analyst. There's a track record of Islamist extremists targeting soldiers in the West. May 23, 2013 -- Updated 0221 GMT (1021 HKT) Revolutionary bionic exoskeletons like the metal suit worn by comic book hero Tony Stark may be closer than you think.