Shut Up! This is Not True

The Police Station Head was bamboozled. He looed at the number on his phone and was shocked. "Y- yes Sir!" he replied immediately. "I- I am sorry!" The phone almost dropped from his hand. 

"Do you have any evidence against Su Haobing that he was involved in the assassination attempt of Xie Yuansheng?" asked the Police Chief. 

"Sir, we were tipped by someone that a man was hiding there with a sniper gun. It is being said that a sniper killed him and that is why we immediately went there to arrest him," replied the Police Chief. 

"I was looking at the records, you hadn't assigned any patrolling car in that area. So how come those police personal went to arrest Su Haobing the moment the killing took place?" 

"N- no Sir, there was a car patrolling near that area and when someone complained about killing we went there immediately."