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Multiple people were killed when a tourist ferry capsized in Colombiaby Circa News
Global News

UPDATE 8:04 p.m. EST 

Nine people were killed and another 28 are missing after a tourist ferry capsized Sunday on a reservoir near the Colombian city of Medellin. 

"Those on the first and second floors sank immediately," a female survivor told the Associated Press. 

According to a preliminary report from authorities, 99 people were rescued and another 40 managed to make it to shore on their own. 

Original story below

A tourist boat with about 150 people aboard sank Sunday in a reservoir near Medellin, which is located in northwestern Colombia. At least three people have been confirmed dead.

The country's air force tweeted saying it sent a helicopter to the Guatape reservoir to help with the rescue effort. Medellin's mayor said firefighters and scuba divers were also headed to the scene. 

"We are ready to provide the assistance required," Colombian President Juan Manuel Santos tweeted in response to the incident.

Video on social media shows the ferry sinking as other recreational boats rush to help.

Survivors said the boat may have been overloaded, adding that none of the passengers were wearing life jackets. 

The reservoir surrounds El Penol and is a popular weekend destination. 

The Associated Press contributed to this report.