New Delhi, Nov. 26 -- At least 13 people were killed after a massive fire engulfed several high-rise towers of a residential complex in Hong Kong's northern Tai Po district, with thick grey smoke billowing out as emergency services tackled the blaze.

Nine people were declared dead at the scene and four others who were sent to the hospital were later confirmed dead - while as many as 15 others were injured, mentioned a report by Associated Press.

The government says three people remain in critical condition and another is seriously injured. The fire has been designated a level-five incident - Hong Kong's most severe classification - and some residents are reportedly still trapped inside the buildings. Images, videos on social media show ...