Quinnipia University students and staff are still reeling from the deadly attacks in Paris.
The university has been rocked by an outpouring of support and condolences from across the US, including from President Donald Trump.
It is also the focus of an international investigation, led by French authorities.
The UN special envoy on counter-terrorism and the UN’s Special Rapporteur on freedom of expression are also investigating.
But what does this investigation look like and how does it relate to the Paris attacks?
What did the US know and when did it know it?
This story continues.
Read more:What we know about the Paris terror attacksHow did the Paris attackers get into France?
The UN investigation began in July 2017, after the French authorities accused a student of being involved in the November 2016 terror attacks in France.
The accused student, who was 18 at the time, is currently in prison awaiting trial.
In an unprecedented move, the UN security council voted in December 2018 to extend the Paris probe into the Paris and Brussels attacks until January 2019.
The extension was not unanimous and was opposed by the US.US President Donald Trumps decision to extend Paris inquiry was criticised by many, including the UN special rapporteur on the freedom of information, and French President Emmanuel Macron.
Mr Macron, in an interview with French radio station France 2, said: “I think it’s a great mistake, because I think it will create the impression that we don’t know the truth.”
The UN Security Council has repeatedly said it will not reopen the Paris investigation unless it finds new evidence.
However, it has been reported the inquiry will not be reopened until new intelligence has emerged.
The investigation into the November Paris attacks has already uncovered a huge amount of information about the attackers.
French investigators have now said that they have identified “thousands” of people who may have participated in the Paris terrorist attacks, but that this could change as they gain new evidence and more information.
Who was Abdelhamid Abaaoud?
The man accused of orchestrating the Paris terrorists’ attack in November 2016 was Abdel Hamid Abaoud, a Moroccan born in Paris in 1971.
He grew up in the same suburb of the city, Abaaoune, and graduated in law school at the University of North African, a year after the attacks.
The French prosecutor’s office said he was arrested in March 2017 in Brussels after a series of bank robberies.
Abaaoud had worked for Al-Qaeda, according to French prosecutors.
His brother, Abdelkader Abaaout, was an Algerian militant who was killed in a drone strike in Syria in 2009.
Abaoud’s older brother, Salah Abaaour, who is also believed to have been involved in planning the Paris killings, was also on the French terror watch list and is believed to be living in Algeria.
Abedaoud was also known to French intelligence services, including CSIS.
He was believed to travel to Syria several times and had been planning attacks in Syria and elsewhere in Europe, according a French intelligence source.
In January 2019, France launched an investigation into Abaaoust’s background.
He is said to have travelled to Syria and was arrested during a raid in Brussels.
During his interrogation, Abaout said that he was inspired by al-Qaeda and its leader, Ayman al-Zawahiri.
Abaaouth said he wanted to “defeat the crusader state”, the source told AFP news agency.
“He was very excited about fighting the crusaders,” the source said.
“In the beginning he was very scared but he had this feeling that he would win.
He thought it would be a very good experience.”
What are the French investigating groups looking into?
French police have been investigating Abaaous links to the attacks since December 2017, when he was first arrested in Brussels, when French investigators arrested him on suspicion of involvement in an attack in Brussels in April 2017.
Ababoud was held in a psychiatric hospital in Brussels until December, when the French prosecutor said he had been cleared of all charges.
He was released on bail in November 2018, a month after Paris attacks.
The French authorities have been working to get him extradited to France to face charges there.
Abaoust was later extradited back to Belgium.
French police are now investigating Abaouths links to Paris attacks after discovering a “confidential dossier” in Brussels that was shared with the US and European countries.
Investigators from the French counter-terror investigation team have been monitoring the “confident” link between Abaaost and the Paris atrocity.
In the weeks before the Paris shootings, French authorities said Abaaood was plotting attacks against the French military.
He also allegedly worked for the so-called “Etienne Chapuis” terror cell, based in Belgium, according the US government.
He also allegedly attended an al-Shabaab training