Reports coming in of a possible coup happening in Turkey

Literally my first post, so I am not sure if I am doing this right, but this is time sensitive:

Relevant tweets (follow hashtags for istanbul & turkey for more)

https://twitter.com/Ozcan_Keles/status/754034649400238081

https://twitter.com/Gencturk122/status/754032492785664000

Reuters article on bridge closure:
http://www.reuters.com/article/us-turkey-istanbul-bridges-idUSKCN0ZV2FE

EDIT: Turkish PM just confirmed that it is a coup attempt:

https://twitter.com/selingirit/status/754044184898797568