Zillur Rahman, senior leader of Bangladesh's ruling party Awami League, was sworn in as the country's 19th President Thursday evening.
Chief Justice MM Ruhul Amin administered the presidential oath to Rahman in Bangabhaban (President House) here.
Rahman, nearly 80, was declared as Bangladesh's new elected President uncontested on Wednesday by the country's Election Commission as he was the only presidential candidate.
After taking oath, Rahman began his five-year term as president, nominal head of the state, replacing incumbent President Iajuddin Ahmed who met his five-year term in 2007.
Rahman is now the senior presidium member of the ruling party Awami League and performed as acting president of the party after its chief Sheikh Hasina was arrested by the immediate past caretaker government in 2007.
Bangladesh has a parliamentary system of government headed by prime minister while the president is the head of state, a largely ceremonial post elected by the parliament.