Chandigarh, Oct 28 (UNI) Punjab's anti-corruption agency has widened its investigation into alleged disproportionate assets linked to former minister Bikram Singh Majithia, filing a fresh chargesheet that scrutinises financial transactions worth about Rs 700 crore and names several individuals and companies. The supplementary chargesheet, submitted to a Mohali court on Wednesday, names Gurmehar Singh, Majithia's brother-in-law Gajpat Singh Grewal, Harpreet Gulati, Amardeep Singh and 10 companies, bringing more alleged financial links under judicial scrutiny. The Vigilance Bureau alleges that the transactions formed part of financial dealings under investigation during 2007-2017, a period when Majithia held influential positions in Punjab's former…