When Murphy's goons use the canisters to pour gasoline on the van, they do so without wearing gloves. As Murphy's car drives away, the camera pans towards the van and you can see the canisters standing beside it, meaning the goons left their fingerprints at a murder scene.
Embassies are only in (or directly outside) a nation's capital. There may be consulates in Los Angeles, but no embassies.