Sambalpur: A joint team of Excise officials and police in Sambalpur conducted raids at a liquor manufacturing unit in Deulabandha on Thursday. The liquor manufacturing unit was running illegally over the past couple of months, said sources. As many as seven persons were arrested during the raid. The arrestees are yet to be identified. A huge quantity of spurious liquor, chemicals, packing machine, brand labels and other incriminating material were seized by the sleuths. Further investigation is underway.