Manchester's Irish World Heritage Centre could lose its licence due to a fight which broke out during St Patrick's Day celebrations on Sunday.
The 'terrifying incident' left an elderly woman who was punched in the face amid the 'violent brawl' with 'nasty facial injuries', according to a police report.
Officers were called to the venue in Cheetham Hill at around 11pm after reports of 'over 40 travellers fighting' and throwing chairs and glasses 'everywhere'.
One 999 caller reported that 'guns and knives' had been mentioned resulting in GMP requesting firearms officers attend together with the tactical aid unit.
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