Industries Minister P Thangamani said the Metro Rail project was a Centre-state initiative, coming under the Union Ministry for Urban Development.
"Therefore it was the desire of Amma (Jayalalithaa) that Venkaiah Naidu should participate in the inaguration. Accordingly, a due invitation was extended to him on June 16, 2015," he said.
He was responding to BJP state President Tamizhisai Sounderrajan's remarks in a section of the media that Central ministers were not invited for inauguration of the Metro Rail services on Alandur-Koyambedu sector, which was flagged-off by Jayalalithaa yesterday.
In an official statement, Thangamani also slammed Sounderrajan for making such "half-baked" statements.
EC had given the go-ahead saying the services can be launched after completion of polling but mandated that no information must be publicised about the same.
"Therefore, though it was decided to launch the Metro Rail services on June 29, no public announcement was made," he added.