It was actually Kennedy's brother, if I'm not mistaken, who had taken his own life.
Some neat things in that article (where's it from?) I hadn't heard before though.
Here's a pic (sorry for the low res) that was featured on the 200 Cadillacs DVD, with Kennedy and his wife. Looks like Elvis was fresh from the aforementioned trip to the barber. I'm thinking he had maybe just taken that police captain's hat off, because his hair is kind of flattened, sort of looking like it did in Change Of Habit. He looks good in this and other pics from this time.
One other thing...In the Revelations book, Lamar or Marty, probably Lamar, claimed that Elvis showed up at that funeral in the dead police officer's uniform! Someone correct me if I'm wrong, but I am almost certain that was the claim. Anyway, Pietrafeso pointed out that Elvis had his suit specially made, and you can see that Elvis' and no one else's was double-breasted! (To clarify--not in this pic, but in others.)