A 30-year-old woman allegedly poisoned her two minor children before taking poison herself at Indira Complex Colony here on Monday.
While the kids, aged five and seven, died, her condition is said to be serious.
A family dispute is said to be the cause behind it.
Meanwhile, in Gurugram, four people took ill after having food at a local stall in the ongoing fair at Mata Sheetala Temple. They were referred to a Delhi hospital.