PJ investigated Murat only one day:

Murat was made an "arguido" or formal suspect on 14 May 2007, 11 days after Madeleine went missing.

http://www.dailymail.co.uk/news/article-542669/Murat-soon-cleared-Madeleine-suspect-police-return-possessions.html

And next day 15 May 2007, PJ and Sousa announced they have no evidence against Murat.

http://www.guardian.co.uk/uk/2007/may/15/ukcrime.madeleinemccann1

So did they get answers to these all questions in one day?

http://minnea.blogspot.com/2008/01/murat-malinka-walczuch-lot-of-questions.html

IN ONE DAY?