India, May 19 -- Greater Noida An 18-year-old man and his 26-year-old sister died while her infant daughter was critically injured after a dumper allegedly hit their motorcycle on the Dadri road in Greater Noida, Ecotech-3 late Sunday evening, police said on Monday, adding that the driver has been arrested.

Police identified the deceased by their single names as Kunal, 18, a resident of Faridabad, and his sister Komal, 26, who was married in Badhpura village near Dadri, Greater Noida.

"On Sunday around 6.30 pm Kunal, and Komal along with her one-month-old daughter were riding a motorcycle on the Dadri road when a dumper hit their bike from behind," said a police officer, part of the investigation, requesting anonymity.

"Both the siblin...