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Rescuers in Mexico City stepped upwards their efforts Thursday to detect any more than survivors in the rubble of a school, ii days later a magnitude-7.ane earthquake killed at least 273 people and injured more than two,000 others.

For more than a day, rescuers at the Enrique Rebsamen school on the capital's south side said they were trying to complimentary a 12-year-quondam girl. Notwithstanding, officials appear Thursday afternoon there were no children trapped -- but an developed, possibly a schoolhouse worker, may still be in the rubble live.

Xx-one children and v adults are now confirmed to have died at the schoolhouse.

Thousands of workers dug through rubble in an attempt to find survivors after the powerful earthquake struck near Mexico City on Tuesday.

Thousands of workers dug through rubble in an attempt to find survivors later the powerful earthquake struck near Mexico City on Tuesday. (AP)

The debris removed from the schoolhouse inverse equally crews worked their style deeper, from huge chunks of brick and concrete to pieces of wood that looked like remnants of desks and paneling to a load that contained a half-dozen sparkly hula-hoops.

Rescuers carried in lengths of wide steel pipe big enough for someone to clamber through, obviously trying to create a tunnel into the complanate slabs of the three-story school building. But a heavy rain fell during the night, and the tottering pile of rubble had to exist shored up with hundreds of wooden beams.

Rescuers removed clay and droppings bucketful by bucketful and passed a scanner over the rubble of the school every hour or so to search for heat signatures that could signal trapped survivors. Presently before dawn Thursday the pile of debris shuddered ominously, prompting those working atop it to evacuate.

Mexican President Enrique Pena Nieto said the number of confirmed expressionless in the majuscule has risen from 115 to 137, bringing the overall toll from the convulse to 273. Mexico City Mayor Miguel Angel Mancera said two women and a man had been pulled live from a collapsed office building in the city's eye Midweek night, virtually 36 hours after the quake.

Nonetheless, frustration was growing as the rescue effort stretched into Twenty-four hours iii.

Outside a collapsed seven-story office building in the trendy Roma Norte commune, a list of those rescued was strung between ii trees. Relatives of the missing compared it confronting their own list of those who were in the edifice when the quake struck -- more than ii dozen names -- kept in a screw notebook.

Patricia Fernandez's 27-yr-old nephew, Ivan Colin Fernandez, worked as an accountant in the vii-story building, which pancaked to the ground, taking part of the building adjacent door with information technology.

She said the last time the family unit got an update was late yesterday: that nearly 14 people were believed to be live inside, and just three had gotten out.

"They should keep u.s.a. informed," Fernandez said every bit her sister, the human's mother, wept into Fernandez'south fleece sweater. "Considering I remember what kills united states most is the desperation of not knowing anything."

Rescue personnel work on the rescue of a trapped child at the collapsed Enrique Rebsamen primary schoool in Mexico City.

Rescue personnel work on the rescue of a trapped kid at the complanate Enrique Rebsamen primary schoool in Mexico City. (AP)

Referring to rumors that authorities intend to bring in heavy machinery that could risk bringing buildings down on anyone however alive inside, Fernandez said: "That seems unjust to u.s.a. because there are still people alive inside and that's not OK."

She added, "I think they should expect until they have the terminal one out."

Seeking to dispel the rumors, National Civil Protection chief Luis Felipe Puente tweeted Thursday that heavy mechanism "is NOT being used" in search-and-rescue efforts.

President Enrique Pena Nieto alleged 3 days of mourning as soldiers, police force, firefighters and everyday citizens dug through the rubble, at times with their hands, gaining an inch at a fourth dimension.

Rescue personnel work on the rescue of a trapped child at the collapsed Enrique Rebsamen primary schoool in Mexico City.

Rescue personnel piece of work on the rescue of a trapped child at the collapsed Enrique Rebsamen main schoool in Mexico City. (AP)

"There are still people groaning. There are 3 more than floors to remove rubble from. And y'all nevertheless hear people in in that location," said Evodio Dario Marcelino, a volunteer who was working with dozens of others at a collapsed apartment building.

A human was pulled alive from a partly collapsed apartment building in northern Mexico Urban center more than 24 hours afterward the Tuesday quake and taken away in a stretcher, apparently conscious.

At least 52 people had been rescued live since the quake, the urban center's Social Development Department said, calculation in a tweet: "We won't terminate." It was a race against time, Pena Nieto warned in a tweet of his own saying that "every infinitesimal counts to salve lives."

People take rallied to help their neighbors in a huge volunteer endeavour that includes people from all walks of life in Mexico City, where social classes seldom mix. Doctors, dentists and lawyers stood alongside construction workers and street sweepers, handing buckets of debris or chunks of physical mitt-to-manus down the line.

At a collapsed factory building closer to the city'south center, giant cranes lifted huge slabs of concrete from the towering pile of rubble, like peeling layers from an onion. Workers with hand tools would speedily move in to look for signs of survivors and begin attacking the next layer.

In improver to those killed in Mexico City, the federal civil defence agency said 69 died in Morelos state just s of the capital and 43 in Puebla state to the southeast, where the convulse was centered. The rest of the deaths were in Mexico State, which borders Mexico City on three sides, Guerrero and Oaxaca states.

Rescue workers and volunteers search for survivors in the aftermath of a 7.1 magnitude earthquake.

Rescue workers and volunteers search for survivors in the aftermath of a 7.1 magnitude earthquake. (AP)

The Associated Printing contributed to this report.