In 2018, he was found guilty of tax fraud in Croatia at which point, in order to avoid going to prison, he fled to neighbouring Bosnia and Herzegovina where he's been living as a fugitive from justice ever since.

Mamić was born in Bjelovar, PR Croatia, FPR Yugoslavia on 16 July 1959 to Herzegovinian Croat parents Josip (1929–2003) and Lucija Mamić, originally from the Herzegovina villages of Zidine and Bukova Gora, respectively, who had moved, in 1956, to the PR Croatia federal unit within FPR Yugoslavia in search of expanded employment opportunities.

[1] In the 1970s, with his two brothers (older Stojan and younger Zoran), teenage Zdravko moved from Bjelovar to the Zagreb suburb of Sesvete while their father was off working in West Germany as part of the gastarbeiter programme.

[9] Mamić has become well known for his hostile behaviour towards journalists, including a number of public incidents punctuated by threats of violence and profanities of personal and professional nature.

[19] On 22 August 2017, Mamić sustained a leg wound in an assassination attempt via ambush by two masked perpetrators who opened fire while he was exiting his vehicle during his annual visit to the village of Zidine near Tomislavgrad in Bosnia and Herzegovina, on the anniversary of his father Josip's death.