There are conflicting reports about a possible arrest of the third suspect involved in yesterday's terror attack in Brussels.

Belgian media has backtracked on an earlier report that authorities arrested Najim Laachraoui today.

It's now believed that someone else was detained in a raid.

Laachraoui, known as the "man in white," is suspected to be the one joined by two brothers in yesterday's attacks at an airport and subway station.

Laachraoui is also suspected of making bombs used in the terrorist attacks that killed around 130 people in Paris last November.

Yesterday's bombings happened just four days after Belgian authorities arrested Paris terror attack suspect Salah Abdeslam, who was born in Belgium.