The MCG has blamed a “breakdown in the thoroughness” of security screening procedures after two men allegedly carrying loaded firearms were able to access a blockbuster match between Collingwood and Carlton. Police alleged the weapons were found after a search by officers at the ground, as a crowd of 82,058 fans watched the Magpies defeat their arch-rivals on Thursday night. Victoria police went to the MCG about 8.30pm on Thursday after two men allegedly refused to leave the venue when security challenged their behaviour. They were arrested and during a search officers allegedly found they each were carrying a firearm