An officer with headquarters at Trivandrum was on official duty at Ernakulam on 30.10.2014 and 31.10.2014. His journey to Ernakulam was from 10.00 p.m. on 28.10.2014 to 3.00 a.m. on 29.10.2014, and return journey from 9.00 p.m. on 1.11.2014 to 3.00 a.m. on 2.11.2014. Halt at Ernakulam was of excessive duration. Who is the authority competent to disallow the excess claim of Daily Allowance for halt ?