Lok Janshakti Party (Ram Vilas) chief Chirag Paswan on Monday demanded a thorough probe regarding the alleged attack on Bihar migrant workers and bring the culprits to book, and ensure a hospitable atmosphere for the workforce in Tamil Nadu. The present crisis would not have occurred had Bihar Chief Minister Nitish Kumar worked for the betterment and development of the state. People would not have gone out of Bihar in search of employment, he claimed. Meanwhile, the four-member official delegation from Bihar that visited Tirupur on Sunday travelled to neighbouring Coimbatore, which too has a sizeable number of migrant worker population. D Balamurugan, Bihar Rural development Secretary, said the alleged fake videos of attack on migrant workers had created panic among the labourers.