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: Detectives investigating the murder of journalist Lyra McKee in Londonderry have carried out searches on the Derry headquarters of political party Saoradh.

Lyra McKee: Police raid Saoradh headquarters