The second half of the Old Firm clash between Rangers and Celtic at Ibrox was delayed by five minutes after a glass bottle was thrown onto the pitch.
Action was about to get back underway when Joe Hart alerted referee Willie Collum about the object thrown on the pitch near the Copland Stand, with shards of glass seen sprayed across his penalty area.
After seeing the broken bottle on the ground and alerting the referee, Hart rushed over to inform Celtic manager Ange Postecoglou, before discussing the incident with Rangers midfielder Aaron Ramsey.
A group of stewards joined referee Collum in the Celtic penalty area to help clear the area of grass, while Rangers striker Kemar Roofe also helped by checking the ground alongside Celtic's Hart.
A Police Scotland spokesperson told Sky Sports News: "We are aware of a glass bottle being thrown on the pitch at Ibrox Stadium, Glasgow during the Rangers v Celtic match on Sunday, April 3, 2022.
