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: Police in Brazil say they have arrested Jose Dirceu, who served as chief of staff under then-President Luiz Inacio Lula da Silva from 2003 to 2005.

Brazil: Ex-Lula aide Dirceu held in corruption probe