The Kelantan Health Department is still conducting further investigations regarding the Covid-19 infection among Sekolah Menengah Kebangsaan Agama (SMKA) Naim Lil-Banat students.

Its director Zaini Hussin said in a situation where the virus was already in the community, it was difficult to determine the cause of infection, however samples from the infected students had been sent to the laboratory to identify whether it involved the Omicron, Delta or Beta variant.

"If we get the information...