ARMED raiders escaped with thousands of pounds from Daisy Hill Post Office in Westhoughton.
Two masked men entered the premises in Leigh Road just after 2.30pm today.
It is understand that at least one of them was carrying a gun.
A Greater Manchester Police spokesman said: "We understand at this stage at least one person was in the shop. No one was injured during the incident.
"The men were wearing dark clothing and balaclavas. They escaped with a substantial amount of cash."
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