President Magufuli also warned ministers against taking “selfies” while on duty, saying their work will be “visible” through results achieved.
He made the remarks on Wednesday at an event to swear-in ministers and their deputies in the capital, Dodoma.
“In government there is now a strange sickness where even communications are posted on WhatsApp groups. Some confidential communications are being leaked. Let’s adhere to our oaths,” President Magufuli is quoted as saying in a tweet by the government spokesperson.
#UAPISHOIKULUDODOMA Ndani ya Serikali sasa hivi kuna ugonjwa mmoja wa ajabu, kwamba hata mawasiliano yanatumwa kwenye ‘Group za WhatsApp' barua nyingine ni za siri na zinaishia kuvuja. Tuzingatie maadili ya viapo vyetu na tufanye kazi zetu kwa uadilifu mkubwa- @MagufuliJP
— Msemaji Mkuu wa Serikali (@TZMsemajiMkuu) December 9, 2020
Mr Magufuli was re-elected in October in a landslide victory in a poll that the opposition described as fraudulent. The president got 84% of the vote.