The father of French gunman Mohammed Merah - who shot dead seven people, including three Jewish schoolchildren, before being killed in a police stand-off in March - has filed a complaint against persons unknown for murder, RTL radio reported Monday.

RTL quoted lawyer Isabelle Coutant-Peyre as saying that Merah's father had filed a complaint for "murder with aggravating circumstances."

While the complaint was filed against persons unknown, it was aimed at "those who gave the orders (for the raid), namely the chief of police," said Coutant-Peyre, who is assisting Merah's Algerian lawyer.

Mohamed Benallel Merah, an Algerian, says French police should have captured his son rather than killing him on March 22.

The police said they were left with no choice after Merah, who claimed links to al-Qaeda, burst out of his bathroom shooting when they launched the raid to arrest him after a 32-hour siege of his Toulouse apartment.

Merah's father had announced plans to sue the French government directly after his son's death. He says the police could have used sleeping gas to overpower his son.

Merah's Algerian lawyer, Zahia Mokhtari, claimed recently that Merah's family had a video of the raid, which showed the 23-year-old gunman asking police, "Why are you killing me? I'm innocent."

The French prosecuting authority will examine the complaint and decide whether to order a formal investigation.

Merah shot dead three soldiers, three schoolchildren and a rabbi in three separate execution-style attacks in Toulouse and the nearby town of Montauban that he filmed. A montage of the footage was sent to broadcaster Al Jazeera, who refused to air it.