With reported cases of infiltration along the Bangladesh border down because of stringent measures, people smugglers on both sides seem to be working in tandem to sneak illegal migrants in through less secured routes, an Aajtak investigation has found. According to the home ministry, more than 5,900 infiltrators were deported to Bangladesh six years ago. Their number came down to 2,175 in 2019, official figures show. But an Aajtak investigation has found human smugglers doubling as money changers in poll-bound West Bengal, bringing illegal migrants via relatively weak defences along the international border. Watch the exclusive report.