UPDATE 03/23/16: During a press conference on Wednesday, prosecutor Frederic Van Leeuw updated the number of those killed in the attacks to 31. Another 270 people were injured during the planned attacks, CNN confirms.

UPDATE 1:14 p.m.: Belgian police officials have reportedly confirmed to BuzzFeed News that the following photo shows three "suspected airport attackers," though no additional information was immediately given:

UPDATE 11:39 a.m.: Citing a statement from an "ISIS-affiliated website," ABC News is reporting that the terrorist group has "claimed responsibility" for Tuesday's attacks in Brussels.

UPDATE 10:20 a.m.: During a speech from Havana surrounding his trip to Cuba, President Barack Obama called on nations to unite behind Belgium in their time of need. "The thoughts and the prayers of the American people are with the people of Belgium," Obama said. "We will do whatever is necessary to support our friend and ally Belgium in bringing to justice those who are responsible. We must unite. We must be together. We can and we will defeat those who threaten the safety and security of people all around the world."

UPDATE 9:29 a.m.: The "provisional death toll" from Belgian media has now been updated to 34, CNN reports. According to regional media outlets, at least 20 people were killed during the subway station attack and 14 at the Brussels Airport. At least 170 people have sustained injuries, though specifics regarding their severity remain unconfirmed.

See original story below.

At least 26 people were killed and more than 130 injured during alleged terrorist attacks in Brussels on Tuesday, with at least one of three total explosions believed to have been the result of a suicide bombing. "We were fearing terrorist attacks, and that has now happened," Belgian Prime Minister Charles Michel tells CNN. At the time of publication, area metro stations and the Belgian capital's airport had been evacuated and placed on lockdown.

According to figures from the Brussels Metro Authority, 15 people were killed and 55 wounded after an explosion rocked a subway station. 11 other people have been reported as dead following two additional explosions at Brussels Airport, CNN reports. According to an airline official, one airport explosion occurred near the security checkpoint and another near the airline check-in counters. The explosion at the subway station reportedly occurred in the Maelbeek district near the European quarter, CNN reports. "Terrorists struck Brussels but it was Europe that was targeted—and all the world that is concerned," French President Francois Hollande said in a statement, as quoted by the Associated Press.

Just last week, Paris attacks suspect Salah Abdeslam was arrested in Brussels following a violent shootout. During a previous raid in the Forest suburb of the Belgian capital, Mohamed Belkaid—another Paris attacks suspect—was reportedly shot and killed. As of Tuesday morning, the attacks in Brussels had not been directly linked to Abdeslam’s arrest. However, as reported by CNN, Belgian authorities are considering the explosions part of a coordinated terrorist attack. With the threat alert in Brussels currently at its highest level, the U.S. Embassy in the region is urging Americans in Belgium to "stay where they are and avoid public transportation," AP reports.

This story is still developing.