Paris police say a suspect was shot and wounded on Tuesday after attacking an officer outside Notre Dame cathedral. The Paris Police tweeted an alert urging people to avoid the area. Police have urged people to stay away from Notre Dame and the island located in central Paris known as Île de la Cité. Numerous police cars have filled the area and an ambulance was seen leaving the scene. A police union official, Cedric Michel, said a man armed with a hammer attacked a police officer who was patrolling in front of the cathedral. Michel said the attacker was then "neutralised" by police and taken to hospital. Prosecutors say they have opened an anti-terrorism probe into the incident. The cathedral was placed on lockdown and visitors took shelter inside as the police operation was under way in the…