More threats are emerging against the officer involved in Saturday's shooting.

Dozens of people are posting threatening messages online.

One post said the officer "must pay" for what he did.

 Another said the poster hopes he burns in the afterlife.

The threats are so serious police are watching his house.

Milwaukee Police Chief Ed Flynn said the officer is staying with relatives in another city. 

A criminal justice expert tells us the safety of the officer is the department's number one priority at this point.

He also said most police departments have teams devoted to social media. The team search for threatening posts.

No word on when the officer will come back to Milwaukee.

An anonymous tip line was created for anyone with information related to the officer involved shooting that occurred in Milwaukee’s Sherman Park neighborhood on August 13. Find out more about the tipline here>>  http://bit.ly/2bBIsWx