False emergency landing was staged at Palma airport.
21 migrants were arrested and have just been released from prison.
Police hunting more illegal immigrants
So far this year 151 small boats with 2,202 immigrants have been detected off the Balearic coast.
It has been a busy day for the air sea rescue services off Mallorca.
Nine small boats were intercepted in 24 hours in the Balearics.
Illegal plan to enter Spain was hatched up on Facebook
41 small boats have been intercepted this year so far.
One of the many boats used to smuggle migrants into the Balearics.