KAMPALA, Uganda — Three senior Ugandan government officials resigned Wednesday, and the president addressed the nation over several mounting corruption scandals, particularly in the country’s nascent oil sector.

Parliament met in an emergency session late on Tuesday and called for the country’s prime minister, foreign minister and internal affairs minister to step down while it investigated allegations that millions of dollars in bribes were paid to various officials by Tullow Oil, a British company. Parliament also voted to halt new oil ventures in the country.

Tullow Oil denied the allegations, calling them “outrageous” and “defamatory” in a letter to Parliament, and the officials under scrutiny denied wrongdoing.

Even so, the foreign minister, Sam Kutesa, who has been implicated in another scandal involving the use of public money to renovate a private hotel, resigned Wednesday, along with two others connected to the hotel matter, the governing party’s chief whip in Parliament and a junior labor minister. On Tuesday night, the internal affairs minister, Hilary Onek, said he too was willing to resign, according to local media reports. But the prime minister, Amama Mbabazi, has refused to resign.