At least three people have been confirmed dead while nine others remain missing after a small boat capsized off the coast of San Diego early Monday.

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.

On Monday, officials arrested two Mexican nationals believed to be involved in the event, identified as Julio Cesar Zuniga Luna and Jesus Juan Rodriguez Leyva. The two were taken into custody at the beach on Monday and charged with bringing in aliens resulting in death and bringing in aliens for financial gain.