Please do not accuse me of making a diagnosis. I worded my message very carefully so that it was absolutely clear to the reader that a diagnosis could only be made by a specialist in the field of mental health.
The link I provided in the message you are quoting is merely an example of one type of mental illness that may be related to the case. It is not a diagnosis.
There is a great deal of research going on into the mental health imact of CoVid, including the response of acting out with violent behaviours.
"As the global CoVid epidemic is developing, a parallel epidemic of fear and worry is spreading in the countries that are being progressively hit by the virus. High levels of public anxiety is being fueled by the lack of public knowledge about the virus and the disease, the lack of specific medical treatment, the circulation of misinformation, images of hospitalized patients and aligned co ns as seen on traditional and social media, and by the needed but drastic and unprecedented actions being taken by governments world wide (ren, Gao, & chen, 2020). The inability of families to be close and support to isolated patients and to those in intensive care units (icu), can result in further distress, anger, sadness, and resentment, especially in who is mourning the sudden loss of beloved relatives. People are witnessing consequences also at a societal scale: the pandemic is disrupting economies and breaking health-care systems, and separating people from workplaces and everyday spaces."
Many times in our society, we speak of those with mental illness in ways that give the person little hope. Untreated mental illness can manifest itself in violent behaviours. Can we improve our mental health awareness, and mental health support and avoid situations of violence such as the one we are speaking of, and many others like it?
COVID-19 and Mental Health | Epidemiology International (E-ISSN: 2455-7048)
http://aws.upl.s3.amazonaws.com/nwica.org/peds.2020-0982.full.pdf
https://delphicentre.com.au/uploads/01. App - Attachment 2020/6. 2020-02-02-Prestietal..pdf