The Ministry of Education announced his appointment on Tuesday
RAB detained the foreigners in front of a relief centre near Ukhia Degree College around 2:30pm.
Ukhia Police Station OC Md Abul Khayer said they released the detained foreigners around 8:4pm after officials of their organisation, Médecins Sans Frontières or MSF, brought their passports and other documents.
He added the detained foreigners were involved with the MSF hospital at Kutupalong refugee camp.
They include two from the UK and Italy each, and one each from the Netherlands, Turkey, South Korea, Kenya, Brazil, Belgium and Norway.