Masana a sha’anin mulki sun ce, Mataimakiyar marigayi tsohon Shugaban kasar Tanzaniya, John Pombe Magufuli, da ya mutu jiya Laraba, Samia Suluhu Hassan, ta kasance mace ta farko da ta dare kan kujerar shugaban kasar, kamar yadda kundin tsarin mulkin kasar ya gindaya.