US Police are searching for a mystery woman who was filmed ringing a Texas doorbell in the middle of the night - wearing what appear to be broken  handcuffs.

The Montgomery County Sheriff's Office has released the footage online in the hope that someone might recognise the woman.

The footage was filmed by a home security system after the woman called to a home in the area at around 3:20am on Friday night.

The woman appears to be barefoot and dressed in a t-shirt, with broken hand restraints on each wrist.

The @MCTXSheriff is investigating the suspicious incident that occurred in Montgomery, TX. Please share this post so it can be monitored by law enforcement.
If you have any info regarding this or if you know the woman or if yoy are the woman in the pictures please contact us. pic.twitter.com/sqwUF1Ls4u

— MCTXSheriff (@MCTXSheriff) August 26, 2018

In a statement, police said: "Numerous citizens in the state and outside have sent missing persons flyers suggesting the women in the video is a missing person from their area."

They said investigators have reviewed the reports for any similarities, "but as of now none are believed to be the women in the video."

"There are no missing person’s reports from the area that match this individual."

Police have canvassed the area and completed door-to-door checks and interviews or homes and businesses in the neighbourhood.

Investigators are also reviewing surveillance video from surrounding households.

Police have urged the woman to come forward if she is safe - and have called on anyone who recognises her to contact them.