A military helicopter has crashed in Qatar, killing all seven people on board, authorities in the Gulf state say. They say all the bodies were found after the helicopter went down due to a "technical malfunction" in Qatar's territorial waters on Sunday. Four Qatari military personnel, one Turkish serviceman and two technicians from a Turkish defence company were on board, Qatar and Turkey say. The cause of the crash that happened during a training exercise is now being investigated. Turkey has a military base in Qatar under a defence agreement signed between the two countries in 2014. In a statement, Qatar's interior ministry said that all seven people on board had been found dead. It expressed its "deepest condolences" to the victims' families. Turkey's defence ministry said the Qatari military helicopter had been "carrying out a training exercise as part of the Qatar-Turkey Joint Forces Command".…