Syria claims shooting down of US drone over Latakia

US officials have said they lost contact with a drone but that it is unclear if it was shot down.If confirmed it would be the first time Syrian forces have attacked a US aircraft since the start of coalition strikes against Islamic State (IS).Syria has not been participating in the raids on IS.The country's state-run Sana news agency described the unmanned surveillance plane as "hostile", without giving further details. The Pentagon said it was looking into the incident.