The U.S. Coast Guard suspended a six-hour search for a missing kayaker off South Padre Island after covering 190 square nautical miles.

According to the Coast Guard, the search began after concerned beachgoers and lifeguards near Beach Access #6 called around 4:30 p.m. Saturday about a man in a kayak about 400 yards offshore before losing sight of him.

While the empty kayak remained visible, the paddler was nowhere to be seen, according to the Coast Guard.

The Coast Guard deployed two aircraft and a boat crew to search the area alongside local park rangers and beach patrol units.

After six hours, the Coast Guard suspended its search. Partner agencies continue to look for the kayaker and the Coast Guard said it will resume its operation if any updates come in.