Mexican army troops stand watch as fellow soldiers work into the night digging through rubble on Calle Gante in Guadalajara, Mexico, April 25, 1992. A series of explosions in the sewer system ripped open streets, flattened buildings and hurled trucks and cars, killing at least 181 people and injuring hundreds. The new head of Guadalajara's sewer system said that a gas spill probably caused the explosion. (AP Photo/Damien Dovarganes)

Today in History: April 25

Inside the story: Photo gallery

Today is Monday, April 25, the 116th day of 2016. There are 250 days left in the year.