Tanzanian President John Magufuli on Wednesday dismissed the head of the government’s anti-graft body for failing to tackle high-level corruption in east Africa’s second-biggest economy.

Magufuli sacked Edward Hoseah, the long-serving director general of the Prevention and Combating of Corruption Bureau (PCCB), due to the slow pace of the fight against graft.

Hoseah has led the government’s anti-graft watchdog for the past nine years and previously served as its director of investigations for almost a decade.

“The president … is not satisfied with the manner in which this institution (PCCB) has been carrying out its duties to tackle corruption,” the president’s office said in a statement.

The president has also suspended four other senior officials of the PCCB for defying the government’s ban on foreign travel by public officials as part of austerity measures.