A 30-year-old Karawara man fill face court tomorrow, charged with with violently robbing a pregnant woman earlier.

Police allege the man - accompanied by another woman - approached the 32-year-old woman as she walked through a playground on Kwel Court and demanded her handbag.

It is alleged he grabbed the bag and pushed the woman away, causing her to fall backwards and suffer minor injuries.

Police say the man then demanded the victim’s mobile phone and wallet and even after he was handed both, struck her in the face - before leaving the area.

Both he and his female companion were arrested in Karawara the next day.

The man has been charged with aggravated robbery and will appear in Perth Magistrates Court tomorrow.

The woman will also appear in Perth Magistrates Court tomorrow charged with breach of bail.