CAIRO – A ******* ****** blew himself up near a major tourist site in Egypt’s southern city of Luxor on Wednesday, wounding four people, including two policemen, but no tourists were hurt in the ****** outside the Karnak temple.

It was the second such ******** this month in Egypt, after a drive-by ******** ****** two policemen near the famed Giza Pyramids near Cairo last week, in a marked escalation by Islamic militants aiming to destabilize the government. The ******* also raise concerns for the country’s key tourism industry, just as it was beginning to recover from years of tumult following a 2011 popular uprising.

Here is a look at ******* on sites in Egypt visited by tourists and foreigners over the past two decades:

-June 3, 2015: ****** on a speeding motorcycle open **** outside the famed Giza Pyramids on the outskirts of Cairo, ******* two ****** officers.

-Feb. 16, 2014: An ********* tears through a bus filled with South Korean sightseers in the Sinai Peninsula, ******* three Korean tourists and an Egyptian driver.

-Jan. 24, 2014: A truck **** targeting Cairo’s security headquarters kills four people and causes heavy damage to the nearby museum dedicated to Islamic arts and history.

-Feb. 22, 2009: A **** explodes at a crowded square near Cairo’s popular Khan el-Khalili bazaar, ******* a French teenager and wounding 24 other people, mostly fellow students on a class trip.

-April 24, 2006: Three nearly simultaneous ******** hit the Sinai’s seaside resort of Dahab, ******* at least 23 people and wounding more than 60.

-July 23, 2005: Two car bombs and a **** in knapsack rip through a hotel and beach promenade in the Red Sea resort of Sharm el-Sheikh, ******* 64 people, mainly tourists.

-April 7, 2005: ******* ****** kills two French citizens and an American near a market.

-Oct. 7, 2004: ******** in the Sinai Peninsula resorts of Taba and Ras Shitan **** 34 people, including 11 Israelis.

-Nov. 17, 1997: Islamic militants **** 58 foreigners and four Egyptians in an ****** outside Luxor at the 3,400-year-old Hatshepsut Temple on the west bank of the Nile. ****** **** all six assailants.

-Sept. 18, 1997: Two ****** **** nine German tourists and their driver in ****** on tour bus outside the Egyptian Museum in Cairo.

-April 18, 1996: Four Islamic militants open **** on Greek tourists in Cairo, ******* 18 people outside the Europa Hotel.