Officers have released an image of a man they want to speak to.
The incident happened inside a shop in Main Street at around 7 pm on Friday 3rd September.
A 30-year-old woman, who worked in the shop, was punched in the stomach.
PC Hollie Woods, said: “I’d like to speak to the man pictured as I believe he may have information about this incident.
“If you recognise him – or indeed you are that person – then please get in touch.”
You can pass on any information via the Leicestershire Police website.
Take a look at Loughborough's new loos
Company fined after machine crushed workers fingers
Town Hall reopens after fire
New exhibition shows how BRUSH keeps the lights on
100 years of Shelthorpe estate
Man jailed for 10 years for killing pub-goer
Meet Charnwood's new Mayor
Brothers tried to dupe Leicesteshire Police to avoid jail
