That rumour came, I believe, from the McCann's lawyer.
Carlos Pinto de Abreu spoke out.
He said: "After September 15, a new procedural penal code was introduced making it necessary for there to be evidence against the citizen to make him an arguido.
"Before September 15, it wasn't necessary. You could be made an arguido without any suspicions or evidence against you.
"Now to constitute anybody as an arguido it is necessary to have evidence in the file.
https://www.standard.co.uk/news/portuguese-police-rushed-to-make-mccanns-suspects-to-avoid-new-law-6623136.html
This was the lawyer who seemed to think the police had a good case against the parents and who advised Kate to consider 'owning up'. She lost faith in him and used another lawyer afterwards.
According to the Portugal Resident the change in the Penal Code meant;
To name someone as “arguido” the criminal police force now requires validation by a judge.
http://portugalresident.com/revisions-of-the-criminal-procedure-code
No-one knows whether a judge would have agreed to the McCanns being made arguidos or not because it wasn't tested.
Whatever Operation Grange offered as evidence they were able to have some people made arguidos. It couldn't have been definitive, because they were never charged. Unless, of course, they requested arguido status thenselves for their own protection.
When one reads through the changes made in Portuguese law ... it clarifies in my opinion the rush to have Madeleine's parents constituted arguidos before they came into force and is precisely why it wasn't "tested".
In my opinion if there was no evidence to lay charges after the event ... it stands to reason there was no prior evidence to justify the imposed arguido status.
In my opinion the opportunity for abuse of power involved in the PJ being the sole arbitrators of the imposition of arguidoship might very well have been one of the motivating factors for the necessary change in the law.
Snip
THE 15th revision to the Criminal Procedure Code of the law number 48/2007, which was published on August 29, came into effect on September 15.
The main reasons for this review relate to impositions of International Law, as some rules have been found to be unconstitutional, and the slowness in the criminal process itself.
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In relation to the investigation stage of a crime, a provision has been included where if there is no grounds that a crime has been committed, an inquiry will not be initiated, which was not the case before.
To name someone as “arguido” the criminal police force now requires validation by a judge.
To protect the suspect’s rights, before the first interview, the person must be informed of the facts that are attributed to them and of the existing evidence, as long as this does not jeopardise the investigation or the fundamental rights of third parties.
Interviews now have a maximum duration of four hours, where previously there was no time limit, and can be resumed for the same period of time but only with a minimum interval of an hour.
Statements made in violation of these limits are considered void.
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Witnesses can also use the assistance of a lawyer, who can inform them of their rights but cannot intervene in the questioning.On the justice secrecy issue, the changes that were made created a less rigid system. From now on, secrecy may be set aside pending prevailing interests.
http://portugalresident.com/revisions-of-the-criminal-procedure-code