Malén Ortiz, who disappeared in December 2013.
The suspects were part of a gang known as Los Lobos.
The Guardia Civil searched a lake at a golf course.
The Guardia Civil were told that Malén was "in a well on a golf course".
Activity at the finca last week.
Investigators believe that Malén willingly got into a vehicle belonging to someone she knew.
The building on the Sa Porrassa finca was searched in 2014.
He suffered from severe mental problems and was eventually admitted to a psychiatric centre.
Malén Zoe Ortiz disappeared from Son Ferrer on December 2, 2013
Neighbours are afraid of Alejandro Ortiz, the father of Malén, because he is extremely violent.
There is to be a rally in Santa Ponsa this afternoon (Saturday).