Saturday, four persons, including two ITBP personnel, were injured in a bear attack in Chamoli district of Uttarakhand. As per Officials report the occurrence took place at about noon when a wild bear entered the 'Sunil' camp area of the Indo-Tibetan Border Police based here and first attacked an official working in the local post office and then went on to injure two troops of the force. They said the bear later also hit a woman living in the ITBP camp and then fled into nearby jungles.