BRUSSELS (CBSNewYork) — A brother and sister who had been living in New York were among those missing Tuesday night following the terrorist attacks in Brussels, Dutch media reported.

Sascha and Alexander Pinczowski have family in the Netherlands, but have been living in New York, CBS2’s Tony Aiello reported.

Many have been posting about their disappearance on social media.

They were reportedly on the phone with their mother, when she heard an explosion and the phone went dead.

The Islamic State of Iraq and Syria, or ISIS, claimed responsibility for attacks in Brussels that killed 34 people and injured 214 others.

In the middle of a busy morning rush hour, two explosions hit the Brussels Airport at Zaventem and a third struck in the city’s Maelbeek metro station, which is near the U.S. Embassy and European Union headquarters.

BRUSSELS ATTACKS: Photos | Videos | Coverage From CBS News

So far, three men have been identified as possible suspects in the airport bombing. Authorities in Belgium said two men in a photo issued by police were “probably” suicide bombers while a third is being sought.

 

Federal police have issued a wanted notice for a man seen wearing a thick light-colored jacket with a black hat and glasses. They are urging the public to call them if they recognize the man.