A teenager has been arrested and an 'imitation' firearm recovered after a robbery at a convenience store, police have said.
Staff were threatened during the raid at the Village Convenience Store on Middleton Road in Heywood, near Rochdale.
Police said a man wearing a black face mask burst inside.
He stole cash and cigarettes before running away.
Police were called to the scene at about 2.10pm on Friday after reports the man had a firearm, GMP said in a statement on Sunday.
A 19-year-old man has been arrested and is in custody, added a spokesman.
Greater Manchester Police are now appealing for anyone with information to come forward.
In a statement, police said: "Officers were called to the Village Convenience Store, Middleton Road, at about 2.10pm on Friday 26 November 2021 to reports a man had a firearm.
"The man, who was wearing a black face mask, stole cash and cigarettes before making off on foot.
"An imitation firearm was recovered nearby by officers.
"A man is in police custody being questioned on suspicion of robbery."
No further information has been released.
The man under arrest hasn't been identified.
Anyone with information should call police on 0161 856 6576 quoting incident 1605 of 26/11/2021.
Information can also be reported online or by using the Live Chat function at www.gmp.police.uk.
If you can't report online, call 101 or Crimestoppers anonymously on 0800 555 111.
