"They had illnesses brought from Malaysia and a history of sickness, apart from the challenging surroundings here and reduced immune system", Salleh added.
Numerous fatalities resulted from similar reasons and conditions.
Although most of the hajj-linked deaths originated from Muslim-majority countries, Muslims from predominantly Catholic Philippines also perished.
Almost two and a half million pilgrims, mostly from overseas, have arrived for the five-day ritual, a religious duty once in a lifetime for every able-bodied Muslim who can afford it.
This year's hajj reportedly began on Friday and ended Sunday.
The Chairman National Medical Committee of National Hajj Commission of Nigeria (NAHCON), Dr. Ibrahim Gana, told journalists in Mina that the commission was making efforts to contact the deceased family and the presidency before announcing his death.
Salleh, the top official from Malaysia, indicated Monday that "nine Malaysian pilgrims had died during this year's pilgrimage".
"28 Turkish citizens passed away during the Hajj pilgrimage season", Ali Erbaş, head of Turkey's Religious Affairs Directorate, said.
Asian pilgrims posted online that "29 people from Bangladesh and five from Nigeria died while performing hajj", a yearly tradition forming one of the five pillars of Islam.
The 2018 hajj fatalities included six Filipino pilgrims, two of them fainting to death aboard flights bound to the Muslim kingdom, according to earlier NCMF reports. This marks the first day of the three-day Eid al-Adha holiday and the day Muslims on hajj take part in the symbolic stoning of the devil.