Man allegedly kidnaps Sydney teen after parents refuse marriage request

A teenager was allegedly kidnapped and taken on a terrifying ride across NSW after a request for marriage was turned down.

The 18-year-old woman was allegedly abducted from a home in Bankstown in Sydney's south-west in the early hours of Monday morning. 

Her alleged kidnapper was a 31-year-old man she knew.

Police will allege the man asked the teen's parents for her hand in marriage but they refused. 

After allegedly kidnapping the teenager, the man is accused of sexually assaulting her at spots around Sydney before driving south towards Melbourne. 

It will be alleged the teenager messaged her friend saying she was scared and being held against her will. 

Police caught up with the pair almost 400 kilometres from Sydney in Gundagai, near Wagga Wagga.

Officers found the car they were in on the Hume Highway about 9pm on Monday night.

The man was taken to Wagga Wagga Police Station and charged with a string of offences, including kidnapping, indecent assault and sexual assault. 

He is due to appear in Bankstown Local Court on Wednesday. 

The woman was taken to hospital in Wagga Wagga and is in a stable condition.