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: An 18-year-old man has been arrested on suspicion of causing grievous bodily harm after two men suffered suspected stab wounds in a "serious assault".

Third man arrested over 'serious' Staffordshire assault