Thiruvananthapuram, Mar 28 : Former United Nations diplomat and writer Shashi Tharoor on Saturday filed his nomination papers from Thiruvananthapuram Lok Sabha constituency.

Tharoor filed the papers before District Collector Sanjay Kaul at the collectorate here.

He was accompanied by former MP from the constituency V S Sivakumar, MLA N Sakthan and District Congress President Mohan Kumar.

Tharoor will have to face a tough challenge from Left Democratic Front candidate Ramachandran Nair, BJP State President P K Krishnadas and BSP State President A Neelalohithadasan Nadar. (ANI)