Zhao Yunlan is in charge of the Dealing With Aliens Department, of course he's a very likely suspect! Next the agent will ask him for potential eyewitness accounts of the crash, and Zhao Yunlan will develop infinite gladness that at least his Shen Wei had a better grasp of how to human than this person does.

I do have some amorphous plot that means Zhao Yunlan won't have to pay, but: spoilers. And it might change a lot between concept and execution.