Mumbai, May 13 (IANS) Sun Pharma on Monday suffered a sudden and steep fall during the final hours of trade on the BSE. The pharma major's scrip declined over 20 per cent to hit a 52-week low of Rs 350.40 apiece, but recovered towards the close.It closed 9.39 per cent or Rs 41.15 lower at Rs 396.85 per share. --IANS ravi/arm