Five people were charged Tuesday for their involvement in an alleged human smuggling operation after a small boat capsized off the San Diego coast Monday morning, according to court documents filed Tuesday.

At least three people are dead and nine other people remain unaccounted for, including two children, U.S. Coast Guard spokesperson Hunter Schnabel told USA TODAY. Crews responded to a report of an overturned vessel on the shores of Torrey Pines State Beach off the coast of Del Mar shortly after 6:30 a.m. local time, officials told KABC-TV.

The authorities said 17 life jackets were found but it was unknown how many people were aboard. Search and rescue efforts were suspended Monday morning.