Nicola Sturgeon has slammed the "mindless and thuggish" behaviour of fans after a glass bottle was thrown on to the pitch at Sunday's game between Rangers and Celtic.
The First Minister commented after the start of the second half was delayed at Ibrox when the missile was launched into Celtic 'keeper Joe Hart 's goalmouth from a stand housing Gers fans.
Broken glass could be seen in chunks on the grass, with Hart demanding the shards were cleared off the park before the game could go ahead.
