The Dutch foreign affairs ministry has issued a code yellow travel warning for Paris following a knife and hammer attack near the Eiffel Tower last week in which a German man died and several others were wounded.

A code yellow warning means people can still travel to the French capital but should be aware of the risk of attacks, the ministry said.

Caretaker foreign affairs minister Hanke Bruins Slot, said people “should look around them and that sort of thing” and said the attack was the reason for the travel warning. She did not say if there was currently a specific threat of terrorist attacks in Paris.

A 26-year-old radical Muslim was arrested after the December 2 incident. He had been jailed for four years in 2016 for terrorist offences.

The rest of France still has a code green although the country itself raised its security alert to the highest level after a man of Chechen origin stabbed a teacher to death at a school in the northern town of Arras in October.