Two children were killed as an oil-laden tank lorry hit a CNG-run auto-rickshaw at Meradia under Khilgaon thana on Monday evening.
The accident took place at Banshpatty Nagdar Par at about 6pm, police said.
The dead were a 10-year old girl and a three-day old baby. Identities of the deceased could not be known immediately.
Khilgaon thana OC Mustafizur Rahman Bhuiyan confirmed the accident.
He said three people were also rescued from the three-wheeler and sent to a nearby hospital.