Police have charged a man following an armed robbery at a convenience store in Toowoomba this morning.

It is alleged about 11.15am, a man entered the business on Greenwattle Street and threatened a staff member, claiming to have a firearm concealed in his clothing.

It will be further alleged the man demanded money from the staff member and fled the scene with a sum of cash.

No one was physically injured during the incident.

As a result of police investigations a man was located and arrested at an address on Coonan Street in Harlaxton.

A 26-year-old Wilsonton man has been charged with one count each of enter premises with intent to commit an indictable offence, armed robbery and obstruct police.

He is due to appear in the Toowoomba Magistrates Court tomorrow.