Former Assam Chief Minister Tarun Gogoi today questioned Prime Minister Narendra Modi's claim that the country has no detention camps, saying that states were asked to set up such facilities to house illegal immigrants way back in the Atal Bihari Vajpayee era. "It was the Vajpayee government that first came up with the idea of constructing detention camps to accommodate foreigners who have completed the jail term for illegal entry into India. After Modi came to power, he gave Rs 46 crore to construct the country's biggest detention centre with a capacity of 3,000 people. How can he now say that there are no detention centres?" he asked.