Telegram Account Hacked With Unauthorized Desktop Session

I am a Telegram user from India and I recently noticed that my account has been accessed without my permission. Yesterday I saw an active session on my Telegram account from a desktop device located in Singapore, which I do not recognize and did not authorize. For my security and privacy, I urgently request that all active sessions on my account, especially the desktop device from Singapore, be logged out immediately. I also want my account to be protected against any further unauthorized access. I am sharing this complaint so that the unauthorized desktop session from Singapore can be terminated as soon as possible and necessary security measures can be taken for my account.