Thirty-one Bangladeshi nationals were arrested from Kulti in South 24 Parganas district for travelling without any valid documents. Police said, 31 Bangladeshis comprising 14 women and 17 men were going to Kakdwip by bus when police intercepted the vehicle and asked them to produce documents yesterday.<br/><br/>As they failed to produce any valid documents, they were arrested. The arrested Bangladeshis hail from Joramulla and Nuakhali area of the neighbouring country.