Costa Rica police said Friday they had arrested four suspects in the killing on its soil of a fierce critic of Nicaraguan President Daniel Ortega in June.

Retired Nicaraguan army major Roberto Samcam, 66, was gunned down at his apartment building in San Jose on June 19 in an attack rights groups and exiled dissidents blamed on the government of Ortega and his wife and co-president Rosario Murillo. 

Originally published on doc.afp.com, part of the BLOX Digital Content Exchange.