Whose Voice Is That?

The street was pale as the NagaHiro agency started to appear from behind the fog as TSR walked towards it. As usual, there were guards at the doors but they were just small fry for TSR after he finished them off he ran through the other guards all the way to the Chief's office. 'What is this madness?, who are you?', asked the chief of NagaHiro surprised at what was happening. 'The boss of 'The Secret Shadows' has sent me with the intent of meeting up with you and breaking through security, if needed. I apologize for any rudeness on my behalf, I also came to you with a message.', replied TSR while handing the chief a stealth phone. 'Ah I also apologize for my reaction, I didn't think TSS' Kingpin(TSS=The Secret Shadows) would try to contact me.', apologized the chief to TSR as he started calling the TSS Boss. The phone buzzed for a while then a voice that somehow sounded like the boss' voice said: 'Hello NH Chief, forgive me for any inconveniences caused by my subordinates but I called you today to talk about how my top agent was ambushed and tied up in a room with anti-power rope which I heard that your agency was the only one to start using it. I just wanted to clarify and check if that was the cause since I know you are my friend and that you wouldn't allow this. '. 'It wasn't my command but I will check all the CCTV cameras and investigate to call you later.', replied the chief. The boss left him to check the CCTV but he couldn't shake the feeling that the chief was hiding something but he just couldn't put his finger on it, all he knew was that the chief was up to something and it mostly wasn't something good. "INTERESTING", SAID AN UNKNOWN VOICE FROM FAR AWAY.