Sorry, no Ukrainian or Big-Bogey-Pharma conspiracy here.
The Fox News article is behind a registration wall, but MSN has it,
https://www.msn.com/en-us/news/world/suspect-who-shot-slovakia-pm-fico-reveals-possible-motive-report/ar-BB1mv0UM ,
Suspect who shot Slovakia PM Fico reveals possible motive: report. From the article:
In a video that has surfaced on Facebook, a person who matched images of the man taken into custody Wednesday was heard saying "I do not agree with government policy," according to Reuters.
"Liquidated mass media. Why is [public broadcaster] RTVS being attacked?" the man reportedly continued, while also questioning the removal of the chairman of a state judicial council.
Slovakia’s government in late April had approved a controversial overhaul of the country's public radio and television services, a move that critics say would result in the government taking full control of the media.
...
Media in Slovakia say the suspect is a former shopping mall security guard and a member of a Slovak Society of Writers, according to Reuters.
So the guy is Slovak, not Ukrainian (contrary to some orcish troll's claim), and his motivation was Slovak domestic politics, not Russia vs. Ukraine or
The Vaccine.