UNB, Narsingdi :Seven people, including two women, were killed and 20 others injured in a head-on collision between two buseson Dhaka-Sylhet highway at Gokulnagar in Raipura upazila on Wednesday.The identities of the deceased could not be known immediately.Nurul Amin, in-charge of Bhairab highway police camp, said a Dhaka-bound ‘Chalanbil Paribahan’ bus from Bhairab collided head-on with Kishoreganj-bound ‘Ananya Paribahan’ bus from Dhaka around 4:30 pm, leaving three people dead on the spot and 24 others injured.The injured were taken to Bhairab Hospital where four of them died after admission, he said.