Sailors’ newest nightmare has struck again, and on Halloween of all days.

A pod of orcas in southwestern Europe sank a sailing boat on Oct. 31 after a non-stop, 45-minute attack, Live Science reported.  The incident is the fourth occurrence  in two years where orcas, also known as killer whales, are blamed for sinking ships in southwestern Europe.

Orca pods from the Strait of Gibraltar region have been harassing boats and their passengers for more than three years.

According to a translated Facebook post made by Polish cruise company Morskie Mile, owner of the sunken boat, a mid-size sailing yacht named the Grazie Mamma was attacked by a pod of orcas off the coast of Morocco in the Strait of Gibraltar.

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Major damage caused by an unknown number of orcas who repeatedly hit the yacht’s rudder caused water to enter the vessel’s hull.

All passengers were safely evacuated before the boat sank as it entered the port of Tanger-Med in Morocco while in tow with the Moroccan Navy.

Continue here: USA Today