Brief Timeline: A look at Egypt's deadliest attacks in the past few years

Terrorism has once again hit the streets of Egypt, despite current president Abdel Fattah El-Sisi's vows to end such attacks after his election in 2014. 

On Sunday, an explosive-packed speeding car crashed into two others in Cairo, causing the death of 20 people and the injury of many others. Though this isn't the first incident of its kind, it is considered the deadliest to take place in over two years in Egypt. 

El-Sisi has condemned the horrific attack, calling it a "terrorist incident" on Monday. 

"I extend my deepest condolences to the Egyptian people and the families of the martyrs killed in the cowardly terrorist incident," he wrote on his Twitter account. 

The collision took place near the National Cancer Institute, which caused multiple damages to the façade of the building and some of its rooms. Over 70 patients were relocated to other hospitals to carry on with their treatments. 

The cancer hospital happens to be close to Cairo's Tahrir Square, "which became known internationally as the scene of mass protests in the 2011 uprising that toppled autocrat Hosni Mubarak."

Egypt's Interior Ministry accused a militant group known as Hasm - linked to the Muslim Brotherhood - for the attack, "saying it was moving the car to carry out an attack elsewhere" without mentioning the target, AP reported.

Egypt has been leading a major crackdown on Islamic militants for years. 

Just this year, back in May, another incident of the sort took place near the country's famed pyramids, leaving over 12 people injured, including South African tourists and some locals. 

The explosion was placed near the heavy-touristic site of the Giza Pyramids, exactly 50 meters away from the outer fence of a new museum set to open next year. 

And yet again, it wasn't the first time the pyramids fall victim to terrorism. 

In December of last year, four people - three Vietnamese tourists and their Egyptian tour guide - were killed and 11 injured in an explosion that targeted their bus.

Egypt has been struggling to lure in tourists due to lack of security, especially after the 2011 Arab Spring protests. With its continuous battles against Islamic militants - linked to Daesh - the country still can't seem to fully shake off the negative image it has gained. 

Tourists were once before the target of terrorism in Egypt. 

In 2017, two German women were stabbed to death by an Egyptian man in Hurghada while four others sustained injuries throughout the attack. 

In 2015, a Russian airplane was brought down in a horrific explosion that left 224 passengers dead - mainly Russian tourists.

It was reported that a handmade bomb - which Daesh took credit for - was planted on the aircraft and set off as the plane departed Sharm El-Sheikh, a popular vacation destination among Russians. 

After this incident, Russia canceled all flights to Egypt for three years, but resumed direct flights back in 2018. 

Other than tourists, minorities in Egypt have had their share of random killing as well.

In 2016, an explosion at a church adjacent to Egypt's main Coptic Christian cathedral killed 30 people and injured over 49.

In 2017, two bombings targeting Copts - Egyptian Christians - during Palm Sunday led to the death of over 49 people. The first explosion killed over 27 people and injured 78 in a church in Tanta, while the second killed 18 civilians and four police officers in Alexandria. 

The so-called Islamic State claimed responsibility of both attacks.

"The attack will not undermine the resolve and true will of the Egyptian people to counter the forces of evil, but will only harden their determination to move forward on their trajectory to realize security, stability and comprehensive development," El-Sisi said in a statement at the time.

In January of this year, and just two days before Egyptian Copts were about to celebrate Christmas, a policeman was killed as he was defusing a bomb left near a church in Egypt. "The device was one of two hidden in a bag on a roof by the church in Nasr City outside Cairo," the BBC reported at the time.