LONDON (AP) — France’s interior minister says that the suicide bomber who targeted Manchester is believed to have traveled to Syria and had “proven” links with the Islamic State group.

Gerard Collomb said on BFM television Wednesday that British and French intelligence have information that British-born attacker Salman Abedi had been to Syria. He did not provide details, and said it is unclear whether Abedi was part of a larger network of attackers.

Collomb, who spoke with British Prime Minister Theresa May after the attack at an Ariana Grande concert that killed 22, said the two countries should continue cooperating closely on counterterrorism efforts despite Britain’s pending exit from the European Union.

With France still under a state of emergency after a string of IS attacks, French President Emmanuel Macron is holding a special security council meeting Wednesday.