Turkey’s president this week criticised Belgium for failing to track the brothers – Brahim, a convicted Belgian armed robber whom it deported previous year and who blew himself up at the airport on Tuesday, and Khalid, who set off his suicide vest at a metro station in the city centre an hour later.”The United States is praying and grieving with you for the loved ones of those cruelly taken from us, including Americans, and for the many who were injured in these despicable attacks”, Kerry said after meetings with Belgian Prime Minister Charles Michel, Foreign Minister Didier Reynders and Jean-Claude Juncker, head of the European Union executive body based in Brussels.Belgium had been on its highest-level alert for terrorism since the Paris attacks in November until authorities lowered that level by one notch on Thursday.Sweden has confirmed that another Swedish woman was among the victims of the suicide bombings in Brussels.Police patrol outside the council chamber of Brussels on Thursday during ongoing investigations into the Paris and Brussels terrorist attacks. He said the last time he saw him, he looked “normal”. “And we will not rest until we have eliminated your nihilistic beliefs and cowardice from the face of this Earth”. He offered condolences for the American victims and vowed to step up counterterrorism cooperation with the US and others. It’s not clear if he was among the at least 20 killed in that blast, RTBF said.Bombs exploded Tuesday at Brussels airport and one of the city’s metro stations, killing and wounding scores of people, as a European capital was again locked down amid heightened security threats.Authorities believe they have identified the mystery man wearing the light-colored jacket in a photograph with two of the bombers at the Brussels airport, according to a US official.The federal prosecutor’s office says the raids are linked a “federal case regarding terrorism” but did not specify whether it had anything to do with the March 22 suicide bombing attacks in Brussels that killed 31 people and left 270 wounded. But, following two days of complaints from followers, the page was reinstated. About 50 officers appear to be involved in the operation.The police broke into a building in the area, that had been cordoned off beforehand.A young man in a hat caught on CCTV pushing a luggage trolley at Belgium’s Zaventem airport alongside two others who, investigators said, had later blown themselves up in the terminal.State broadcaster RTBF said police apparently feared the bag held explosives.RTBFsaid Mr Clerfayt said the arrested person was linked to the attacks in Brussels this week and an arrest in France.Prosecutors said he had been charged with taking part in the activities of a terrorist group, and actual and attempted terrorist murder. “I know people of many, dozens of nationalities”, he said.These kinds of police actions suggest authorities’ urgency not only to learn more about what happened Tuesday in Brussels, but to prevent the next attack.