Jean Charles de Menezes, 27. Scotland Yard said Mr Menezes, who lived in Brixton, south London, was completely unconnected to the bomb attacks. Mr Menezes, who was from the city of Gonzaga in Minas Gerais state, had lived in London legally for at least three years and was employed as an electrician.
What was he doing there? What was his connection to the people in the house,
"House" in England may not refer to a single family dwelling, but also to an apartment building or an office building. It's not as if his leaving the building under surveillance implies that he knew someone in the building connected to the bombings.
and, did he realize the men chasing him were undercover police.
Either he didn't or he didn't believe them. I've heard conflicting news regarding how much English he spoke.
Just because this guy was from Brazil doesn't necessarily mean he wouldn't have links to terrorists (including Islamic radicals.) (Ref.:)
RIO DE JANEIRO (Agence France-Presse) - The high command of the Revolutionary Armed Forces of Colombia has three bases or hide-outs in Brazil, the daily O Estado de Sao Paulo reported during the weekend, quoting Colombian intelligence sources.
The report said the largest of the bases is in the southern Brazilian state of Parana, in a region known as Guaira, on land owned by a naturalized Brazilian of Lebanese origin who has been in government custody for seven months.
Hopefully MI5 and MI6 are checking out this guy's background while Scotland Yard is getting "Monday morning quarterback'ed" on this shooting.
An electrician would be a good cover for a bomb maker. If they get any explosive residue off of this guy, then this may have been a righteous shooting.
Hopefully the bobbies had a little more than a hunch and a suspicious runner to back up their choice to take this guy out.