An officer is trying to apprehend and arrest an individual whom he/she believes

An officer is trying to apprehend and arrest an individual whom he/she believes mas committed a homicide and may be armed.
The suspect flees and the officer is unable to catch up with the suspect. But sees him/her in front of the officer.
May the officer fire a warning shot to help stop the suspect?
Please answer the above question in a short 3-4 paragraph essay response, giving justification for your answer.