A 21-year-old woman allegedly committed suicide, hours after her brother drowned in a nullah in Bikaner district, police said on Saturday.According to police, Rekha was upset over her 19-year-old brother Sandeep's death and allegedly jumped into a water tank near her house.Sandeep died after accidentally falling into the nullah overflowing with rainwater near his house at around 1 pm.The bodies were handed over to family members after postmortem, police said.ALSO READ | Teen girl reaches Jaipur airport to fly to lover in Pakistan | Know what happens nextALSO READ | Rajasthan government forms board for upliftment of four caste groups | READ