WARSAW, Ind. (WOWO): Police serve multiple warrants at a Warsaw business for the sale and possession of synthetic drugs following a four month investigation at the Phillips 66 Convenience and Fuel station on East Center Street in Warsaw. After undercover purchases and testing of the substances being sold, arrest warrants were issued and served last night on the owner, 55-year-old Jaswant Singh, and his sons, 23-year-old Simranjit Singh and 20-year-old Belwinder Singh, who are clerks at the business.