The Jewish Museum of Belgium in Brussels. Photo: Wikimedia Commons.

JNS.org – Belgian authorities are searching for a possible accomplice to Mehdi Nemmouche, the French-Algerian gunman who killed four people at a Jewish museum in Brussels last May.

Nemmouche, 29, has allegedly fought with jihadist terror groups in Syria. The Belgian prosecutor’s office confirmed that it is looking for an unidentified man who appeared on surveillance footage of the Brussels attack with Nemmouche. In a 19-second clip, the man is seen walking on pavement with a backpack and wearing a striped t-shirt and jeans.

“We confirm that there is a link between the two wanted notices and that we are looking for this person. The investigation will determine whether this person is an accomplice or not,” the prosecutor’s office said, AFP reported.

The announcement comes as Belgian authorities have started a wider crackdown on Islamic terrorists following the attacks in Paris earlier this month. Belgian police killed two jihadists on Jan. 15 as part of several raids against terror cells that were planning imminent attacks.