A Muslim immigrant accused of kidnapping an 18-year-old Sydney girl and forcing her to marry him in a secret Islamic ceremony is set to be deported.

The 31-year-old, from Lebanon, allegedly snatched the teenager from her bedroom in Bankstown before forcing her to a home in Lakemba to be married by a sheikh.

He then allegedly assaulted the young woman and drove her about 400km towards Melbourne before police swooped and made a dramatic arrest.

The accused, who was released on bail last week, is now being held at Villawood Detention Centre and will be deported because he holds the wrong visa, Seven News reported.

A Muslim immigrant accused of kidnapping an 18-year-old Sydney girl and forcing her to marry him in a secret Islamic ceremony is set to be deported

The 31-year-old, from Lebanon, allegedly snatched the teenager from her bedroom in Bankstown

It is unclear what will happen to the serious charges the man faces should he be sent back to Lebanon.

The horrifying 43-hour ordeal began when the man allegedly forced the victim out of her bedroom window and took her to the Novotel at Brighton Le Sands.

They stayed together at the hotel until the following night when the Islamic wedding ceremony is said to have taken place.

The man was arrested in Gundagai, about 400km from Sydney, and was charged with kidnapping, sexual assault and indecent assault.

The accused, who was released on bail last week, is now being held at Villawood Detention Centre and will be deported because he held the wrong visa

The man told a magistrate he had done nothing wrong because he believed he was lawfully married to his victim

He told a magistrate he had done nothing wrong because he believed he was lawfully married to his victim, reported Nine News.

The young woman, who knew the man, claimed he wanted to use the marriage to secure an Australian citizenship.

'He lives overseas, but he doesn't have a visa here, so if he gets married here, the girl gets to put him here... he can stay here,' she told Seven News earlier this month.

'It was scary. I just wanted to come back home to my family and not be with him.'

The horrifying 43-hour ordeal began when the man allegedly forced the victim out of her bedroom window (pictured)

The young woman, who knew the man, claimed he wanted to use the marriage to secure an Australian citizenship