51.   A powerful explosion went off Friday night in an underground parking lot next to a central Madrid subway stop.

52.   A powerful predawn explosion in the Tibetan capital, Lhasa, has injured five people, a monitoring group reported Saturday.

53.   A powerful explosion at an ammunition depot outside the presidential palace caused extensive damage but aid workers Friday could only confirm two people dead.

54.   A powerful explosion at an ammunition depot outside the presidential palace caused extensive damage, a government official said Friday.

55.   A powerful explosion destroyed two restaurants and badly damaged homes, shops and offices Tuesday in a southern Sydney suburb.

56.   A powerful explosion Friday night sent smoke spewing out of an underground parking lot near a central square in the Spanish capital.

57.   A powerful explosion Friday night sent smoke spewing out of an underground parking lot next to a central subway stop in the Spanish capital.

58.   A powerful explosion on Sunday ripped through the tense northwestern city of Tetovo, and a shadowy ethnic Albanian militant group claimed responsibility for the blast.

59.   A powerful explosion partially destroyed a five-story house, killing two and wounding one person in the Siberian town of Kyzyl, officials said Tuesday.

60.   A powerful explosion ripped through a building near the presidential office complex Monday, killing two women and wounding a man.