Public sector lender Indian Overseas Bank (IOB) witnessed widening of losses to Rs 3,606.73 crore in the March quarter due to higher provisioning for mounting bad loans. The bank had registered a net loss of Rs 646.66 crore in the same quarter of previous fiscal. The loss was mainly due to provisioning requirements including higher provisions on account of RBI guidelines on revised framework on Resolution of Stressed Assets, IOB said in a statement. Its total income rose to Rs 5,814.42 crore during the fourth quarter of 2017-18 from Rs 5,661.70 crore in same period a year ago. Interest income increased to Rs 4,828 crore as against Rs 4,630 crore for the quarter ended March 31, 2017 — a growth of 4.28 per cent. The provisions for bad loans and contingencies increased nearly four-fold to Rs 6,774.55 crore during the March quarter from Rs 1,789.74 crore a year earlier.