The deceased have been identified as Shobhraj (45) of Gungemau village and Ram Bhawan (25) of Nahargar village, they said, adding that they were repairing a house when the wall collapsed.
The injured, Banwari (25), has been shifted to the Trauma Care Centre in Lucknow, Circle Officer of Police (Musafirkhana) Somesh Shukla said.
A case has been registered and an investigation is on, the police officer added.