At least five Srilankan fishermen have tragically lost their lives and three more are in critical condition after consuming the mysterious contents of bottles found floating in the open sea.

The Sri Lanka Navy recently reported that at least five fishermen have died after consuming an unknown liquid from bottles they found while at sea, around 320 nautical miles from Tangalle, a town on the southern coast of Sri Lanka. It’s unclear how many of these mysterious bottles were found floating out at sea, but a Navy spokesperson told journalists that they contained some sort of alcohol. The bottles were shared among the sailors of the fishing vessel named Devon, and before long, some of them started feeling sick. Despite receiving rudimentary assistance on the boat from Sri Lanka Navy medical personnel, at least five of the fishermen have died, and another is in critical condition. Unfortunately, the crew is believed to have shared the mysterious bottles with other fishing boats.