A man smashed the head of his infant girl on the floor of their house in a fit of rage during a quarrel with his family members in Dumuria upazila of Khulna on Thursday morning, police said. The deceased was identified as Tamima, daughter of Md Ujjal of Cluster village of the upazila. The baby was just two-and-a-half months-old. Read:2 more held over torturing woman in Khulna Sheikh Koni Mia, officer-in-charge of Dumuria police station, said Ujjal had an altercation with his family members while the baby was in his lap. At one stage, he threw the baby to the ground out of anger, leaving her seriously injured. The family members immediately rushed the baby to Upazila Health Complex and later to Khulna Medical College and Hospital (KMCH), where she was declared dead on arrival, said the OC. "We have detained the man. Legal steps are underway in this regard,” he added.