NAIROBI, Sept. 22 -- The terror attack carried out by Somali militant Al-Shabaab in a shopping mall in Kenya's capital Nairobi on Saturday has left at least 59 people killed and 175 injured, the deadliest attack since the bombings that hit the U.S. Embassy in the city in 1998.
Fresh gunfire keeps erupting as Kenyan security forces are trying to save unknown number of hostages alive in a standoff since Saturday.
The following is the chronology of terrorist related events that have taken place across Kenya since 1998.
Aug. 7, 1998 -- Al-Qaida terrorists attack U.S. embassy building in Nairobi, killing 213 people and wounding 5,000 people. The twin-attacks also targeted Tanzania.
Nov. 14, 2002 -- Terrorist attack at an Israeli-owned hotel in Kikambala, Mombasa, kills 15 people, including three Israelis.
Oct. 24, 2011 -- Al-Shabaab launches a series of low-grade terrorist strikes in Nairobi. Attacks aimed at civilian targets. Attack at Mwaura's pub, leaves two dead, 20 wounded. Attacker hurled grenade before fleeing. Police bomb squads say the grenade used were Russian-made.
Oct. 15, 2011, Kenya launches a military offensive against Al- Shabaab militants in Somalia who had been crossing the border into Kenya to kidnap foreign tourists and aid workers for several months.
Operation Linda Nchi began soon after the kidnapping of two Spanish women who were working for Doctors Without Borders at the Dadaab refugee camp complex in Kenya's North Eastern Province on Oct. 13, 2011.
Oct. 17, 2011 -- A Kenyan navy patrol boat is hit by a suspected rocket-propelled grenade off the coast of Lamu, injuring three navy officers.
Oct. 24, 2011 -- Attackers hurl grenade at a commuter bus stage in Nairobi. One person dead, 59 people injured.
Oct. 27, 2011-- Suspected Al-Shabaab militants attack a vehicle transporting exam materials in Lafey district in Mandera, killing four people, including two education officials and a Kenyan police reservist.
Oct. 28, 2011 -- A vehicle in a convoy carrying members of Kenya's paramilitary General Services Unit heading to Liboi hits a roadside landmine 7 km from Garissa town. Three people are injured.
Nov. 5, 2011 -- Two grenades are hurled at the East African Pentecostal Church in Garissa town, killing two including an 8- year-old girl. Five others are injured.
Nov. 6, 2011 -- Suspected Al-Shabaab militants attack a border post in Damasa village in Lafey district in Mandera, killing a police reservist.
Nov. 24, 2011-- Twin grenades target a Holiday Inn hotel and a shop in Garissa, killing three people and injuring at least 27 others. A roadside bomb in Bulla-Garaay, near Mandera town, kills a Kenyan soldier and wounds four others on patrol.
Nov. 26, 2011 -- Suspected Al-Shabaab militants attack Arabia, a trading center near Mandera, and hit the local police station, taking arms and ammunition and destroying communications equipment.
Dec. 5, 2011 -- A landmine targeting a United Nations convoy explodes at Ifo refugee camp in Dadaab complex, killing a police officer and injuring three others.
Dec. 11, 2011 -- A remote-controlled explosive device explodes near Mandera Border Point Three, killing one police officer and injuring three. Another landmine in Wajir town targeting a military convoy explodes injuring nine soldiers.
Jan. 11, 2012 -- Armed Al-Shabaab militants kill six people including three police officers in Gerille camp, Wajir District. The militants also kidnapped two government officials.
Feb. 19, 2012 -- Al-Shabaab claims responsibility for an attack on a police station in Hulugho, Garissa, which killed a policeman and a civilian and injured two other civilians.
March 10, 2012 -- Six people are killed and more than 60 injured when four hand grenades are hurled at Machakos bus station in Nairobi.
March 31, 2012 -- At least one person is killed and 18 wounded in two attacks targeting a church gathering in Mtwapa and a restaurant in Mombasa.
April 29, 2012 -- A grenade attack in God's House of Miracle International Church in Nairobi kills one person and injures at least 15 others.
May 15, 2012 -- Attackers fire indiscriminately at the Bella Vista nightclub in Mombasa, one killed. Three grenades are used to attack club.
May 21, 2012 -- Four Kenyan soldiers are injured when their patrol vehicle hits a landmine in the north-eastern Mandera region.
May 28, 2012 -- Blast at Nairobi's shopping stall, Assanand's House, injures 27. Police confirm grenade or bomb used in attack.
June 24, 2012 -- Three people are killed and 30 wounded when a hand grenade is thrown into Jericho Beer Garden in Mombasa as football fans watch the Euro 2012 quarter-final match.
July 1, 2012 -- Twin church attacks in Garissa town kill 17 people and injure 60 others. Attackers seize guns from Police before mass shootings. Catholic Cathedral and African Inland Church (AIC) are attacked. Police arrest 80 people in operation after the killings.
July 18, 2012 -- Grenade attack at a barber shop in Wajir town leaves three policemen injured.
Aug. 3, 2012 -- Two separate attacks in Nairobi's Eastleigh neighborhood kill four people. The bombs used in the attack are disguised as a transistor radio and a gas cylinder.
Aug. 28, 2012 -- Three policemen were killed and 12 wounded during riots in Mombasa following the killing of Muslim Cleric, Aboud Rogo in Mombasa. Al-Shabaab claims responsibility for riots.
Sept. 20, 2012 -- Kenyan Defense Forces (KDF) launch major operation in Garissa after the indiscriminate killing of three of its soldiers in AMISOM.
Jan. 4, 2013 -- Two killed in grenade attack in Garissa from a saloon car at a tent where people were chewing khat.
Jan. 16, 2013 -- Suspected Al-Shabaab shot dead five people and injured 3 others at a restaurant in Garissa.
Jan. 17, 2013 -- Two men believed to be suicide bombers of Somali origin die after improvised explosive devices went off in Hagdera refugee camp in Dadaab.
Feb. 2, 2013 -- A blast in Wajir town in northeast Kenya leaves KDF soldier dead and two other soldiers injured.
April 18, 2013 -- Six are shot dead and 10 others seriously injured by armed gangsters who stormed Kwa Chege Hotel in Garissa and started shooting.
Sept. 21, 2013 -- Armed masked terrorists stormed a popular shopping mall in Nairobi, killing 59 people and injuring more than 175 people. Al-Shabaab claims the responsibility for the attack.
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