SARLAHI: Two CPN-UML cadres — Hari Upreti and Yubraj Mainali — were critically injured when an unidentified armed gang attacked them on Monday night. The two were attacked while they were returning home at Sundarpur Chuadwa from Dhungrekhola, UML’s District Deputy Secretary Rewanti Pant said, adding that the gang also looted motorbike, mobile phone sets and cash from them.