It's said to have happened on Sidwell Street on Monday 15 July.
A woman was approached by another woman who took her phone and then punched in the nose at around 11pm.
Officers have issued a picture of a woman they wish to speak to as part of their investigation.
Two men missing after entering sea
Huge emergency response in Budleigh Salterton
Students take over Radio Exe
Christmas Day special from Xpression FM
Work to start on major Tavistock Road improvements
£45 million scheme moves to phase 2
Last night of the Christmas Proms - REVIEW
Bournemouth Symphony Orchestra at the Great Hall
Christmas snow possible on Dartmoor
That's despite no white-Christmas predicted
Car thug sought
This man may be able to help enquiries
