Three external instructors accompanied the pupils from Tanjong Katong Primary School (TKPS) on their trip to Mount Kinabalu and one of them is now missing.
The whereabouts of Mr Muhammad Daanish Amran, 22, of outdoor learning firm Camp Challenge, which was engaged to help the school organise the trip, is still not known.
As for the other two instructors, one has flown back to Singapore while the other - the trip leader - stayed in Kota Kinabalu to provide assistance, a Camp Challenge staff member told The Sunday Times.
The employee, a fellow instructor who wanted to be known only as Mr Hairi, said the firm's higher management staff, including its chief executive, are in Kota Kinabalu now to help.
"They are there to take care of the situation," said Mr Hairi, 23. "Daanish's family members are in the area now as well."
He added: "Daanish has about three years of experience in this industry... But this is a natural disaster."
Friends of Mr Daanish also went on social media yesterday to pray and leave messages for him.
Twitter user LuqmanArgh posted: "Still no news about Daanish. Really hoping he is fine where he is right now."
The Ministry of Education's statement last night did not give any updates on the three external instructors who went on the trip.
Besides Mr Daanish, two TKPS teachers are also missing.
Well wishers posted messages and prayers yesterday on the Facebook pages of two teachers of the school who went on the trip, 35-year-old Mohammad Ghazi Mohamed and 29-year-old Terrence Sebastian Loo.
Photographs on Mr Ghazi's Facebook page showed that he had gone on a similar school trip to Mount Kinabalu in 2011.
Mr Fir Abdullah, 35, who went to Victoria School with Mr Ghazi, described him as good-hearted.
"My sister used to work at TKPS and she told me that Ghazi is one of the missing teachers. I was beyond shocked... Didn't expect someone within my circle to be affected," he told The Sunday Times.
The property agent added: "He was very caring. When I had a stroke in 2011, he visited me in the hospital even though we had lost touch for a while by then."
Friends and pupils of Mr Ghazi and Mr Loo posted messages on social media yesterday, hoping that the duo had not come to any harm.
One of them, student Mohammed Abdullah, who graduated from TKPS in 2013, tweeted: "Mr Ghazi, we need you."
This article was first published on June 7, 2015.
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