His possible death has been speculated for months, maybe a half year.
It’s not a big stretch to speculate somebody is dead when they have disappeared for such a long time.
Let’s just say that no one is looking hard for Joseph Mifsud. He is a western Intel asset operative. Likely UK. UK operatives are all over this fake Trump-Russian collusion. UK operatives have been colluding with Americans like Fusion GPS to frame Trump and some of those who work for him like Papa-D and Carter Page