NASUGBU, Batangas (UPDATE)—Thirty-six students were confirmed confined in a hospital in this town after attending a convention Monday. Doctors suspect food poisoning.

According to David Morcoso, a doctor here, the patients experienced abdominal pain and diarrhea.

"Lahat sila either ang complaint ay either abdominal pain or diarrhea. By fecalysis result naman wala namang amoeba or any protozoal parasite na nakita," he said.

All 36 students were discharged by Tuesday morning.

The number of other participants confined in other hospitals in the region could not be verified at the time this story was updated.

There are about 597 people who attended the convention, who are accounting students from Central Luzon.

Meanwhile, Robby Tantingco, public information officer of Holy Angel University in Pampanga, alleged that the rice the students ate for breakfast at the hotel they were at was what allegedly caused food poisoning.

"According to my administrator, nagkaroon ng food poisoning doon sa rice, sa kanin na kinain nila at out of 80 students from Holy Angel University ang na-confine sa ospital. Pero na discharge na sila," Tantingco shared.

The event organizer, the National Federation of Junior Philippine Institute of Accountants Central Luzon, has yet to make a statement regarding the incident.

ABS-CBN News reached out to hotel management, which said the incident is being investigated.

The local government of Nasugbu has also created a task force, but organizers have yet to contact its members.

Local officials are set to have a meeting with the management of the hotel on Thursday.