PARIS — The Islamic State fighters who carried out the attacks in Brussels honed their skills through combat in Syria, and the sibling suicide bombers were also crucial to planning the Paris attacks, according to the edition of the extremist group’s magazine released Wednesday.

In the English-language magazine Dabiq, the group drew a direct line between the two attacks — and made no mention of the key suspects captured in Belgium. ‘‘All preparations for the raids in Paris and Brussels started with’’ brothers Khalid and Ibrahim El-Bakraoui, the group said.

Brussels was home to many of the attackers who struck the French capital Nov. 13 with suicide bombings and volleys of assault weapons fire that left 130 people dead. According to investigators, the same cell was behind the suicide bombings that killed 32 people in Brussels on March 22.

The younger Bakraoui blew himself up in a rush-hour Brussels subway train, killing 16 victims. That same morning, his older brother was one of two suicide bombers who detonated explosives-laden suitcases at Brussels Airport, killing another 16. The other airport bomber was Najim Laachraoui, the bomb maker for both the Brussels and the Paris attacks, who was an early recruit for the Islamic State group.

It is ‘‘firstly due’’ to the Bakraouis that the attacks in the French capital occurred, the magazine said. It also mentioned Mohamed Belkaid, the Islamic State fighter who was killed covering Paris suspect Salah Abdeslam’s escape from a hideout ‘‘during the final stages of preparation for the raid in Brussels.’’ It said Belkaid, who had Swedish residency, took part in some of the extremist group’s most important battles, including the capture of Ramadi.