Two dry cargo vessels collided in the North Sea early on Tuesday, with one of them likely sinking, one confirmed dead and another four seafarers missing, German authorities said.

The incident occurred at around 5am local time, 12 nautical miles (22 km) southwest of Helgoland and 17 nautical miles northeast of Langeoog Island.

According to Germany’s Central Command for Maritime Emergencies, the incident involved the 3,400-dwt general cargo ship Verity (built 2001) and the 38,100-dwt handysize Polesie (built 2009).