This case is riddled with unreliable evidence. People reported seeing Madeleine McCann all over the world, reported charity collectors and random men standing in streets.
It is also riddled with no evidence at all although interestingly enough Amaral has announced on video that the Portuguese police did visit Brueckner ~ but he wasn't in so they went away.
That wasn't "all over the world" that was right on the doorstep in Portugal very, very close to the location from which Madeleine was abducted.
SnipChristian Bruckner was one of 600 people of interest investigated by police in the wake of Madeleine's disappearance, but officers who were dispatched to speak with the convicted paedophile returned with no information and never followed him up.
In a television interview, Goncalo Amaral, the controversial police chief who blamed the McCanns for Madeleine's disappearance, admitted that it was not possible to investigate every potential perpetrator in enough detail.
"I have been told that, yes, they had come knocking on the door, that person [Bruckner] was not at home," he told the Portuguese TV channel TVI. Amaral was taken off the McCann case for a series of crucial mistakes including not securing the crime scene properly, and launching a bungled investigation into Madeleine's parents, which was dropped after eight months.
Defending his force's missed opportunity with Bruckner, Mr Amaral said: "We are doing a survey of people known for theft, namely thefts in apartments. And apparently this man was not on the list of thefts in apartments; he had stolen fuel."
https://www.independent.ie/world-news/europe/top-suspect-in-maddie-case-not-quizzed-because-he-wasnt-home-39307836.html