Warning: This video contains disturbing content. Discretion advised. The moment of the massive explosion that rocked the Lebanese capital Beirut, killing more than 137 people and injuring thousands, was captured in high definition by a shop owner who was recording when the blast hit. Video shows smoke rising from Beirut's port with small sparks being seen in what is believed to be fireworks that were set off by the blaze. According to reports, fireworks were stored in the same warehouse where 2,750 tons of ammonium nitrate had previously been stored. After several seconds of recording, a massive explosion bursts outwards, which then moves outwards towards where the shop owner is, the resulting shockwave impacting multiple buildings in the process.