A 34-year-old man was treated by Honolulu Emergency Medical Services after he and three other swimmers got into trouble in waters near the popular surf spot China Walls Sunday.

The City and County of Honolulu’s Emergency Services Department said EMS responded along with lifeguards from Honolulu Ocean Safety at 12:27 p.m. after receiving a report of four swimmers in distress.

As Ocean Safety and EMS made their way to the scene, a Good Samaritan on a jet ski arrived to assist all four men and transported them to a rocky section of nearby coastline.

Lifeguards arrived, jumped into the ocean and assisted the men to dry land, where EMS evaluated the 34-year-old, who refused further medical treatment. The other three swimmers were uninjured.

According to Ocean Safety, a rising south swell produced waves in the 3- to 4-foot range Sunday morning, which made it difficult for the men to return to shore.

Honolulu Emergency Medical Services said two in the group were visitors to Hawaii, while the swimmer treated by EMS and one other were members of the military.