I'm not sure what's most newsworthy: that the Al-Aqsa Martyrs' Brigades decides to threaten a Danish political party, that the Al-Aqsa Martyrs' Brigades are still active in Gaza, that there are any Danes in Gaza who don't think their lives are in danger, or that Danish broadcaster DR thinks the Al-Aqsa Martyrs' Brigades are a terror group. In any case, doing a web-search I did not find Khaled al-Jabbari in any other context.
Palestinian terror group Al-Aqsa Martyrs' Brigades is now directly warning DPP.
"This party deals with the blood of the Danish people. It is dangerous," says spokesperson Khaled al-Jabbari, who brought up the subject in an interview with Morgenavisen Jyllands-Posten in Gaza.
"Should this be construed as a threat? No, I don't threaten, I warn. We don't want to see the Danish people as an enemy, but this can get to actions," he says.
The spokesperson hinted that he himself was ready to actively take part in an attack against Danish institutions to defend the prophet.
Head of the DPP Pia Kjærsgaard was shocked by the statements saying that they will under no circumstances bow down to a terror organization and that the painting is a 400 year old picture that was used to symbolize freedom of speech.
Source: DR.dk (Danish)
See also: Jerusalem Grand Mufti condemns Danish People's Party