WA man charged over park sex assault

A 39-year-old man has been charged after allegedly arming himself with a syringe and sexually assaulting a young woman in a public toilet in Perth.

The victim, 22, was jogging in the southeastern suburb of Beckenham on May 19 when she stopped at the toilet block in Mills Park at about 3pm (WST) and was attacked, police say.

A man will face court later on Monday, charged with aggravated sexual penetration without consent and two counts of aggravated indecent assault.

Police are asking anyone with information to call Crime Stoppers on 1800 333 000.