London tower fire: What do we know?

LONDON (AP) — Firefighters are battling a huge blaze at a west London high-rise block that houses more than 100 apartments. Here is what we know about the fire so far:
WHAT HAPPENED?
Reports of a fire at Grenfell Tower in North Kensington, west London, came in just before 1 a.m. on Wednesday.
The first fire crews arrived at the scene within minutes, and the London Fire Brigade soon declared it a major incident. The brigade sent 45 fire engines and over 200 firefighters to the scene.
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