IDBI Bank on Saturday said its net profit for the quarter ended June rose 34 per cent to Rs 335 crore, owing to robust interest income flows. The banks’s net profit for the quarter ended June 2010 stood at Rs 251 crore. The bank’s net interest income increased 36 per cent to Rs 1,152 crore in the first quarter of 2011-12, compared with Rs 844 crore in same quarter of the previous financial year.