A 35-year-old scuba diver has died after he was found unresponsive in the water at Kewalo Basin.

The Honolulu Medical Examiner’s Office has identified him as Brian J. Bugge of Honolulu. The exact cause of death is pending.

Police said Bugge was found unresponsive in the water, approximately 100 yards offshore of Kewalo Basin sometime between 7:30 a.m. and 7:50 a.m. Sunday.

Emergency Medical Services said he was scuba diving when he was discovered unresponsive.

A 42-year-old man dove into the water and brought Bugge onto a boat. Cardiopulmonary resuscitation was performed on him until they reached a pier.

Emergency Medical Services treated and transported Bugge to a hospital in critical condition where he died.

Paramedics also transported the 42-year-old diver to a hospital in serious condition due to his quick descent into the ocean when he rescued Bugge.

Police said there were no signs of foul play.