K Muthu, who is attached with Engineers Regiment, climbed the tower at Ajmeri Gate at around 1 PM on Friday and refused to come down despite appeals by police and Army officials over the past four days.
The 35-year-old sepoy, hailing from Tuticorin district of Tamil Nadu, alleged that he was transferred five times in five years and wants to meet the Defence Minister with his complaints.
Colleagues from his unit are taking turns to be with him atop the tower and trying to convince him but in vain.
On Friday, he had thrown a bunch of papers and in one of the letters, he demanded his discharge from service due to alleged harassment by seniors. He had also requested the commanding officer in the letter to get his salary of the last eight months cleared.