How to Identify the SPID of a Job currently running in the server.

Hello Experts,

One of the job is running in my server longer period of time. The server is very bg with at least 500 connections. The production was stopped and I was even trying to kill to that job process but I couldn't identify the spid of that job currently running in the server. The owner of job is Sa. Could anybody please help me to identify SPID of that Job.

Thanks in advance