 Areas now under the jurisdiction of Taguig and Pateros were initially represented as part of the first district of Rizal in 1907, and remained so until 1972.Taguig and Pateros, both municipalities then, were separated from Rizal on November 7, 1975 by virtue of Presidential Decree No.824, and was represented in the Interim Batasang Pambansa along with other Metropolitan Manila municipalities and cities as part of Region IV from 1978 to 1984.