Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: Canadian police say a suspect is in custody after at least four people - two of them police officers - were killed in a shooting in the eastern city of Fredericton, New Brunswick.

Fredericton shooting: Four dead including two police in Canada