At least 20 persons of Progotishil Chhatra Jote, a left leaning students’ organisation, were injured in an attack allegedly by Chhatra League activists in front of Government Tolaram University College yesterday noon. Narayanganj district unit president of Chhatra Front Sojol Baroi alleged that they comprised some left leaning student organizations went to Government Tolaram University College to hand over a memorandum to the college principal mentioning some irregularities in admission process and when they reached main gate of the college some Chhatra League activists attacked them.