Investigators have found a cache of weapons at the home of the 31-year-old man who rammed his car into a police van on the Champs Elysees avenue on Monday, a judicial source close to the investigation said.

Adam Dzaziri, a 31-year-old who had been on a watchlist for radical Islamists, had at least nine weapons, including two pistols and a Kalashnikov-type assault rifle, the source said.

Dzaziri, who died in the attack, was carrying in his car an assault rifle, two pistols, ammunition and two large gas canisters, two police sources and the judicial official said

The revelation of the discovery came after prime minister Edouard Philippe expressed dismay that Dzaziri was able to have a gun permit despite being on a jihadist watchlist.