Congress leaders and workers were taken into custody by the police after they took to the streets here as party leader Rahul Gandhi appeared before the Enforcement Directorate in the national capital for questioning in a money laundering case. Party leader Anshu Awasthi, who was among those taken into police custody, also alleged that leader of the Congress Legislative Party in Uttar Pradesh Assembly Aradhana Misra 'Mona' and senior Congress leader Nasimuddin Siddiqui have been put under house arrest.