New Delhi, Oct 27 (ANI): Congress on Sunday condemned the serial blasts that took place ahead of BJP's Hunkar rally on Sunday in Patna and said that there has been a big security lapse. At least five people were killed and more than 50 were injured when a series of blasts rocked Patna. According to reports, the first explosion took place at a platform in Patna railway station and another bomb that was found in a toilet was defused.