French police arrest PIP implant boss Mas - source
A second executive from Poly Implant Prothese (PIP) was also detained, the source said.
PIP closed down in March 2010 after regulators discovered it was using a non-medical grade silicon in its implants, and the French government has advised women with PIP implants to have them removed.
(Reporting by Jean-Francois Rosnoblet; Editing by Louise Ireland)