How do I kill all ops for a particular user that have been running for longer than x seconds?

I’ve run db.currentOp() on the database and I can see a bunch of long running jobs with:

            "effectiveUsers" : [
                {
                    "user" : "xxxxx",
                    "db" : "admin" 
                }
            ],
            "opid" : "rs0:-1668312",
            "secs_running" : NumberLong(33137),

how do I kill all the jobs for user xxxxx, that have been running for longer than 10000, for example?