Paris (CNN) Terror suspect Salah Abdeslam appeared in a Paris courtroom Wednesday but declined to address the charges against him, saying he was exhausted due to his transfer from Belgium earlier in the day.

After Belgium turned the 26-year-old suspect over to French authorities early Wednesday, elite French military police flew him to France.

He was then handed over to authorities and taken to the Palais de Justice in central Paris to appear before the investigating magistrate, CNN's French affiliate BFM-TV reported.

His next hearing has been set for May 20, according to his French attorney, Frank Berton.

Ali Ghufron, left, recruited his two younger brothers -- Amrozi, center, and Ali Imron -- to participate in the Bali, Indonesia, bombings in 2002. They detonated two bombs on the tourist island, killing 202 people from 21 different countries.

Ali Ghufron, left, recruited his two younger brothers -- Amrozi, center, and Ali Imron -- to participate in the Bali, Indonesia, bombings in 2002. They detonated two bombs on the tourist island, killing 202 people from 21 different countries.

Waleed al-Shehri, left, and his younger brother, Wail, were aboard American Airlines Flight 11, sitting beside each other before they helped hijack the plane that crashed into the North Tower of the World Trade Center.

Waleed al-Shehri, left, and his younger brother, Wail, were aboard American Airlines Flight 11, sitting beside each other before they helped hijack the plane that crashed into the North Tower of the World Trade Center.

Salem al-Hazmi, left, and his brother Nawaf were aboard American Airlines Flight 77, which crashed into the Pentagon on September 11, 2001.

Salem al-Hazmi, left, and his brother Nawaf were aboard American Airlines Flight 77, which crashed into the Pentagon on September 11, 2001.

Mohammed Merah, right, fatally shot seven people in and around Toulouse, France, in March 2012. He was killed in a shootout with police. Prosecutors said Mohamed's brother Abdelkader, left, helped plan the crimes; Abdelkader is now serving a prison sentence.

Two radicalized brothers, Dzhokhar and Tamerlan Tsarnaev, set off bombs near the finish line of the Boston Marathon in April 2013. Tamerlan Tsarnaev, right, was later killed in a gunbattle with police. Dzohkar, wearing the backward hat, was convicted on 30 criminal charges and sentenced to death. He is in prison awaiting appeals.

Said Kouachi, left, and his brother Cherif barged into the Paris offices of the satirical magazine Charle Hebdo and shot down 12 people in January 2015. Both died in a shootout with police.

A pair of brothers -- Khalid El Bakraoui, left, and his older brother Brahim -- are among the five people who authorities say played a part in the terrorist attacks in Brussels, Belgium, on Tuesday, March 22. They're not the only siblings who've been involved in a major terrorist attack. Two brothers sat side by side on the plane that slammed into the North Tower of the World Trade Center on September 11, 2001. Two brothers were involved in the 2013 Boston Marathon bombings. And authorities say two brothers were part of the same ISIS cell that wreaked carnage in Paris in November. What is it about brothers and terrorism?

Salah Abdeslam, left, and his older brother Brahim have been implicated in the Paris attacks that killed 130 people in November. Brahim was killed when he set off his suicide vest in a cafe. Salah was captured in Brussels on Friday, March 18. Stephen Moore, a former FBI special agent, said he is not surprised that so many terrorist cases involve brothers. Many FBI cases involved siblings, he said. "They'll support each other even when they're not ideologically sold on what you're believing in," Moore said. "They're following you, not an ideology."

The Belgian-born French citizen, who is charged with participation in terrorist murder and taking part in the activities of a terrorist organization, will be held in solitary confinement under maximum security conditions, French Justice Minister Jean-Jacques Urvoas told reporters.

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"A dedicated surveillance team of skilled agents, trained for detention of dangerous individuals, will be in charge of him," he said, according to BFM.

Marcel Duredon, a union representative at Fleury-Merogis Prison in the southern suburbs of Paris, confirmed to CNN that Abdeslam would be held at that institution.

Abdeslam, the only survivor of the group of men accused of carrying out the November 13 attacks in Paris, was Europe's most wanted man before he was captured last month in Brussels after a shootout with Belgian authorities.

Lawyer: Judge him for what he did

Abdeslam's French attorney, Frank Berton, told BFM that his client "won't stay silent" and said he planned to mount a "defense based on explanation."

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"Obviously the line of defense will be to explain things, especially his rather fast radicalization, to explain his acts, what happened moments before the Bataclan attack, what happened at the Stade de France," he said, referring to two targets in the Paris attacks.

"He has to tell us about his journey and his role."

Abdeslam had to be judged "for what he did, not for what he didn't do," Berton said.

"He has to be judged for what he did, and not for what he represents as the last survivor. He shouldn't carry the burden of acts which are not his."

Sven Mary, Salah Abdeslam's Belgian lawyer, downplayed his client's alleged role in the terror attacks, describing Abdeslam as "more of a follower than leader" and as "smart as an empty ashtray," according to Libération newspaper.

Victim's relative: 'Very emotional'

Aline Le Bail-Kremer, a spokeswoman for the French Association of Victims of Terrorism whose cousin was among those killed in Paris, said the extradition was "very important and very emotional."

She said families were desperate for answers, but there was also "a strong risk of disappointment." While Abdeslam has claimed he's prepared to talk, they have doubts about how honest his account will be, she said.

Seeing justice take its course was the most important thing, she said.

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"It's a necessary step to continue an essential work of mourning."

Samia Maktouf, a lawyer for the families of 16 of the 130 attack victims, echoed her views.

"It is a first step to knowing the truth. Today, the families are looking to know what happened on November 13, and even though we don't trust Salah Abdeslam to tell the truth, we're still hoping," she said.

"It's a kind of relief for them to know he's here."

Charges in Belgium, too

Last week, Belgian authorities charged Abdeslam with attempted murder over a shootout with police in Brussels days before his capture.

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Four police officers were wounded in the March 15 shootout in the Brussels suburb of Forest.

The fugitive was captured three days later in Molenbeek, another district of the Belgian capital, in a gunfight during which he was shot in the leg.

It ended his four months on the run. Four days later, a terror cell struck at the Brussels Airport and a metro station in the city, killing 32 people.

Investigators have said the same ISIS network carried out the Paris and Brussels attacks.

Abdeslam was born in Brussels and lived there before the Paris attacks.

Alleged role in Paris attacks

French investigators believe Abdeslam may have been the driver of a black Renault Clio that dropped off three suicide bombers near the Stade de France, one of the attack sites on November 13.

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They also think he wore a suicide belt later found on a Paris street after the attacks. Sweat on the belt matched Abdeslam's DNA, a source close to the investigation told CNN.

Police stopped Abdeslam at checkpoints after the Paris attacks but did not detain him then as he hadn't been identified as a suspect yet.

His brother Ibrahim was one of the suicide bombers who blew himself up at a cafe during the attacks.

Another brother, Mohammed, subsequently told Belgian state broadcaster RTBF that he thought Abdeslam at the "last minute ... decided to reconsider" carrying out a suicide attack in Paris -- possibly accounting for the discarded belt.

ISIS claimed responsibility for both the Paris and Brussels attacks.

Mark Ellis, executive director of the International Bar Association, told CNN that Abdeslam's trial presented "a real challenge for France."

"It will be very important that he's seen as given a fair trial," Ellis said, adding it was crucial the process not be rushed.

"I have no doubt the evidence is there for a prosecutor to make a fairly strong case."