
Who?
"An ex-police officer, Mark Kearney, his son, and another reporter faced related charges."
So, is that list:
An ex-police officer,
Mark Kearney,
his [Kearney's] son,
and another reporter,
or:
An ex-police officer, Mark Kearney,
his [Kearney's] son,
and another reporter,
or:
An ex-police officer,
Mark Kearney, his [the ex-officer's] son,
and another reporter
?
There are several more possible permutations. Come up with your own!
On the topic of the article, good decision there. The press should definitely be allowed to covertly investigate people and organizations without having to be worried about being covertly investigated.