welcome back. a new party scandal for british prime minister boris johnson. a downing street spokesman said johnson celebrated his birthday with a gathering at his residence in june of 2020 at the same time tight covid restrictions were in place. cnn's scott mcclain is in london. >> reporter: that's right, laura. previously the local police, metropolitan police said it was their policy in general not to go back and investigate retrospectively incidents that happened over potential covid breaches that happened a long time ago. new this morning the chief of the london metropolitan police says that based on new information and a determination this is public interest, police will now investigate several incidents, several accusations of breaches in relation to covid