Story highlights

Protesters storm a memorial in Brussels and raise their arms in Nazi salutes

Arrests have been made in Belgium, France, Germany, Italy and the Netherlands

The official death toll in the attacks is now 35

CNN  — 

Authorities carried out more than a dozen raids. Security concerns forced the cancellation of a peace rally. And at a memorial for the attack victims, anti-immigrant tensions boiled over in the streets.

Here’s a look at the developments over the weekend, days after coordinated attacks at the airport and a metro station in the Belgian capital killed at least 35 people and injured hundreds more:

Tensions high: Protesters stormed into a memorial for Brussels attack victims Sunday, raising their arms in Nazi salutes and shouting anti-immigrant slogans as they scuffled with with people who’d gathered for a peaceful vigil there. Police in riot gear removed the protesters from the area after about an hour. That was enough time to expose a powerful divide in how people in Brussels are responding to terror.

Charges filed: A suspect identified as “Faycal C” faces several charges, including “terrorist murder,” the Belgium Federal Prosecutor’s Office said in a statement Saturday. Authorities haven’t detailed what link the suspect allegedly had to the bombings.

Manhunts continue: Authorities are still searching for two men seen in surveillance footage who they say are suspects in the bombings: A man wearing a black hat who pushed a luggage cart through the Brussels airport and a man spotted holding a large bag at the Maalbeek metro station.

Investigators are searching for the man in the black hat shown in surveillance footage at the Brussels airport.

Sweeping raids: Police carried out 13 raids in and around the Belgian capital on Sunday, taking in nine people for questioning. Five of them were released after in-depth interviews; four remain in custody.

Arrests in Belgium and beyond: As investigators try to piece together the network behind the Brussels attacks and crack down on terror threats across Europe, they appear to be casting a wide net. Since the Brussels bombings, arrests have been made in Belgium, France, Germany, Italy and the Netherlands.

• “Devastated” airport: Officials say it’s too soon to say when the Brussels airport will reopen. Staffers will test a temporary set-up on Tuesday, the airport said, but “a restart in the short term is not possible in the devastated infrastructure.”

Victims identified: Identifying bombing victims is a painstaking process. And investigators aren’t done yet; so far, they’ve identified the remains of 32 people. Details have emerged about several of the people confirmed dead, including an American couple that had lived in Belgium since 2014, a Peruvian chef and a Belgian law student.

Tales of survival: We also learned more about the people who managed to survive the bombings, including a Dutch husband and wife who live in Las Vegas and were checking in to fly home when the blasts tore through the Brussels airport.

Peace march canceled: Organizers canceled a peace march planned in the Belgian capital Sunday because of security concerns.

Concert called off: Pop star Mariah Carey was supposed to be belting out hit songs at a concert in Brussels on Sunday, but she called off the show over safety concerns.

CNN’s Phil Black and Ray Sanchez contributed to this report.