Mandurah detectives are investigating an alleged assault incident in Halls Head where a mother and her baby girl were injured.
Police were called to the apartments on Apollo Road at about 4:50 am on Thursday after a mother and child were assaulted by a man.
They sustained minor injuries to their faces and hands.
The 20-year-old mother from Falcon and her infant daughter were staying at the apartments.
Both were taken to hospital for examination.
The man was not at the scene on police arrival.
He is described as 20-30 years old, slim build, dark hair, possible black hair that is short on sides and long on top, unshaven, wearing checker long sleeve shirt, dark t-shirt, light coloured jeans, black shoes with white soles.
Police have released a CCTV image of person that may be able to assist in the investigation.
Anyone who recognises the person or may have information are asked to call Crime Stoppers on 1800 333 000 or report on line to www.crimestopperswa.com.au
Second man charged over alleged Safety Bay murder
Man arrested in Golden Bay over alleged motorbike thefts
Local volunteers recognised at City of Rockingham awards
Part of teen's finger 'taken off' in Baldivis assault
Mandurah crowned top waterwise council for second time
Special Crime Squad hunt for man wanted over 'current investigation'
Man wanted over alleged sexual assault of teen girl at Cooloongup oval
Warning to home owners after Falcon firies attend insulation fire
Over 10,000 guns removed from WA community in buyback scheme