"Our thoughts are with Mohan's family and we ask for media to respect their privacy at this tragic time."
Police are reportedly investigating the cause of death, which remains unknown.
An ICC spokesperson said: "We are deeply saddened and our thoughts and prayers are with his family and friends, Abu Dhabi Cricket and everyone connected with the event."
This year, Sheikh Zayed Stadium successfully hosted fixtures for the Indian Premier League, Pakistan Super League and T20 World Cup.
Cricbuzz reported that Singh had prepared the wicket for Sunday's match between New Zealand and Afghanistan, which got underway hours after his body was found.
Singh previously worked as a ground supervisor at Mohali's Punjab Cricket Stadium.
Former BCCI chief curator Daljit Singh told PTI: "He was a bight kid when he came to me. A very talented and hardworking person. He hailed from Garhwal and I also remember him as a family man. After he went to the UAE, he used to come visit every time he was in the country but I had not seen him for a while. Gone too soon and it is really tragic."
New Zealand defeated Afghanistan by eight wickets to secure its place in the T20 World Cup semi-finals, knocking out India in the process.