
He got off lightly compared to Tufty.
https://www.bristolpost.co.uk/news/bristol-news/meerkats-eat-squirrel-bristol-zoo-2190676
Turns out that they are nasty little bastards.
https://www.independent.co.uk/news/science/meerkats-revealed-as-the-most-murderous-mammal-known-to-science-a7335741.html
p.s. OK, Tufty was a red squirrel. BTW, it's illegal to release a grey squirrel back into the wild, so, even if the thing had been saved at the zoo, they'd have had to kill it anyway.