[Updated 7:30 a.m.] Fire department officials have now confirmed seven fatalities.
[Updated 4:50 a.m.] Fire department officials confirmed early Thursday morning six people are dead from the explosion that rocked Harlem on Wednesday.
[Updated 10:35 p.m.] A resident of a New York City apartment building that was flattened by an explosion says the smell of gas was "unbearable" and residents complained about it repeatedly.
Ruben Borrero says residents complained to the landlord about the smell as recently as Tuesday, a day before the explosion.
He says a few weeks ago, city fire officials were called about the smell because it was so bad that a resident on the top floor busted open the door to the roof for ventilation.
The explosion leveled two buildings and many people are still unaccounted for, according to the city. The Associated Press said more than 60 people were injured.
Borrero lived on the second floor with his mother and sister. None of them were at home at the time of the explosion, but he assumes his terrier is dead.
Con Edison says it received no gas complaints from the building before Wednesday.
Family members wailing at scene of fire 116th st. Unable to connect w family. Heavy smoke. Paramedics still going in. pic.twitter.com/aq6p4kSPmN— Stephen Nessen (@s_nessen) March 12, 2014
Paramedics heading into building on 116th st street. pic.twitter.com/L1wXlcaVhg— Stephen Nessen (@s_nessen) March 12, 2014