A Coventry middle school student was arrested after police investigated a "social media threat," authorities said Monday afternoon.The student was charged with disorderly conduct after a caller told police that the Alan Shawn Feinstein Middle School student had sent a threatening message via Snapchat, Col. John MacDonald said in a news release.Several students received the Snapchat message, he said, adding that police went to the home of the student at 6:56 a.m.