Upset over frequent quarrels with her husband, an autorickshaw driver, over his alcohol addiction, the woman left for her native place near Ilanjambore from Karaikudi in Sivaganga district with her three daughters, police said, adding enroute she purchased a can of petrol.
She alighted from the bus near Ilanjambore last night, and poured petrol over the three girls and set them ablaze after which she set herself on fire, police said.