The quake that hit Lisbon, Portugal on Sunday morning is one of the largest ever recorded, according to the National Seismological Center (CNS), which recorded a magnitude of 6.8.
The quake was centred at the area of Ponte de Lago in the town of Porto Alegre and the epicentre was just south of the city of Barra da Tijuca, which sits on the northern tip of Portugal.
A small earthquake in February this year triggered a tsunami that hit parts of the country.
The city of Lisbon, a city of just over 6,000 people, had a total population of just under 17,000 when the quake hit.
The earthquake also caused damage to buildings, but most of the damage was caused by buildings collapsing and being knocked down.
The Lisbon earthquake was the second most powerful quake in history, according the Guinness Book of World Records.
A tsunami of around 20 millimetres (0.8 in) was recorded off the coast of Portugal in April.
This is the first time that a tsunami has ever hit Portugal in over 40 years.
The tsunami is the result of the powerful El Niño weather pattern that has been hitting the country over the past few years.
In February, the US Geological Survey reported that El Niño has contributed to the greatest amount of damaging and catastrophic damage to the country in the past five years.
This year has also been one of record-breaking El Niño conditions, with an average annual maximum of 14.5 millimetre (5.3 in) of rainfall and an average minimum of just 2.7 millimet (1.9 in) in recent months.