Naseemuddin Siddiqui, the expelled BSP general secretary on Thursday, claimed that party supremo Mayawati is a gangster who leads a number of criminal gangs. “On her direction, members of her gang kill people, set houses afire, beat up rivals, break their cars and issue threats as well,” he said. Further, he added, “I am aware of all the illegal investments made by Mayawati and her brother Anand. I will release more proof of her illegal properties to the media soon.’