Urgent search for American mom who disappeared on vacation in Belize

Alison Mackenzie, 43, was on vacation with her partner Paige Rote and 15 other members of her tour group on Belize's Rendezvous Island when she vanished Saturday morning.
1:40 | 01/22/20

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Transcript for Urgent search for American mom who disappeared on vacation in Belize
We turn to the search for an American mother who went missing on a vacation in Belize. Her boyfriend says when he woke up she was gone and Victor Oquendo joins us with the latest on this mysterious disappearance. Good morning, Victor. Reporter: Good morning, George. This was supposed to be a dream excursion to an island paradise, now it's one family's worst nightmare. This morning, an urgent search for a missing American mother in Belize. Authorities searching for 43-year-old Alison Mackenzie. Mackenzie and her partner taking a tour boat to rendezvous island where they spent the night with 15 passengers and three crew members. When he woke up Saturday morning he says Mackenzie had vanished and reported her missing. Investigators are on the island and searches are being conducted to find out what the circumstances are that led to her disappearance at this time. Reporter: According to police Mackenzie's personal belongings were found on the aisle and she was seen drinking the night before her disappearance. Her detail her sister finds hard to believe. I will say it is not like her to be intoxicated. Maybe have a drink but to be intoxicated like I've never seen her drunk in my life. Reporter: Mackenzie on the tour operated by ragamuffin tours releasing a statement saying they are cooperating with law enforcement adding we are in contact with and offered our full cooperation to the family of Alison Mackenzie and we assure them that we will continue to do all in our power to assist law enforcement into the investigation into her disappearance. The police say it is early in the investigation. They have not identified a person of interest. And they're also not ruling anything out. The U.S. State department says they are working closely with authorities there. Guys. I, my goodness. Thinking of her family. All right, Victor, thank you.

This transcript has been automatically generated and may not be 100% accurate.

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