Turkish broadcaster CNN Turk showed live pictures of military helicopters opening fire at the building. According to local media, TRT is now under military control.
Heavy gunfire has also been reported at the Turkish Presidential Palace.
A RIA Novosti correspondent confirmed two powerful explosions hit the capital of Ankara.
Earlier in the day, in an apparent coup attempt, the Turkish military claimed it had seized power from the government of President Recep Tayyip Erdogan.
“Turkish Armed Forces took full control of power,” the General Staff said in a statement broadcast earlier on state television.
The government maintains it is still in control.
There is very little evidence of what is happening the country since social media services Facebook, Twitter, and YouTube were shut down inside Turkey earlier in the day.