A man who brandished a knife in a Scunthorpe Ladbrokes betting shop before escaping with a large amount of cash remains on the run.
The knifepoint robbery took place on Ashby Road at just before 8pm on Tuesday, November 1.
The man, described as in his 20/30s of large build, wearing dark clothing and with a dark scarf obscuring his face, left the store with an unknown amount of cash after threatening the cashier.
Luckily no-one was injured in the robbery.
House to house enquiries and witness statements have so far led to no arrests by officers.
Anyone with information is asked to call Humberside Police on 101, quoting log number 548 of November 1.
Alternatively, contact the independent charity Crimestoppers anonymously on 0800 555 111.