Three US attacks in 24 hours probed for terror links

Three attacks carried out in the United States on a single day -- a New York bombing, a Minnesota mass stabbing and a New Jersey pipe bomb blast -- were under investigation for potential terror links.

Authorities say there is no evidence that the attacks were coordinated but their timing in under 24 hours raises fears about security -- already a major issue in the country's deeply divisive presidential election battle between Hillary Clinton and Donald Trump.

Twenty-nine people were injured when a bomb exploded in New York's upmarket Chelsea neighborhood on Saturday night, damaging buildings, shattering glass and sending shrapnel flying across the street.

A second bomb was uncovered by police four blocks away and defused safely, before being sent to the FBI in Virginia for forensic examination.

Both bombs were filled with shrapnel and made with pressure cookers, flip phones, Christmas lights and explosive compound, The New York Times reported late Sunday, citing law enforcement officials.

CNN reported that officials had obtained surveillance videos showing the same man near the site of the explosion and where the undetonated device was found, according to "multiple" local and federal law enforcement sources.

Hours earlier, less than 100 miles (160 kilometers) south in New Jersey, a pipe bomb exploded in a trash can on the route of a Marine Corps run before the start of the race, causing no injuries but forcing its cancellation.

In the Midwest, an assailant reported to be Somali-American went on a stabbing spree in a shopping mall in St. Cloud, Minnesota, injuring nine people before being shot dead by an off-duty police officer.

US authorities said the motive of all three attacks was unclear, but elected officials quickly identified them as terror-related.

"If you look at a number of these incidents, you can call them whatever you want: they are terrorism though," New Jersey's Republican Governor Chris Christie, a member of the Trump campaign, told CNN.

"References to Allah"

Police confirmed that the assailant asked some victims whether they were Muslim before attacking them and made "references to Allah."

While all 29 people who were injured in the New York bombing have been released from the hospital, three of those hurt in Minnesota remain hospitalized, officials said.

"Was it a political motivation, a personal motivation? What was it?" New York Mayor Bill de Blasio said at a news conference. "We do not know," he added, calling on residents to be vigilant.

Fifteen years after the September 11, 2001 attacks, officials stress that the United States is safer from terror plots that originate from overseas but more at risk from the lone-wolf attack perpetrated by individuals who may be inspired by IS or Al-Qaeda propaganda.

"In many of these cases we don't know until two, three or four days later whether or not there is a terrorist link," warned New York Congressman Peter King in a CBS television interview.

(AFP)