France's interior minister has asked judicial police to look into tweets by far-right leader Marine Le Pen of gruesome photos of actions of the Islamic State group — her response to a broadcast journalist broadly comparing her party to the organization.

Le Pen tweeted the photos after Jean-Jacques Bourdin, known for his brash style, said on BFM TV that her National Front party and IS both focus on identity so share a "community of spirit."

"Daesh is THIS!" Le Pen said in tweets showing executions, using the Arabic acronym for the group.

The minister, Bernard Cazeneuve, told lawmakers he has taken the case to a section of the judicial police that deals with illicit content on the Internet. He called the tweets "propaganda photos of Daesh."