Farc 'co-ordinator' held in Spain

Guess who she was working for.

My first guess would have been the National Council of Churches. Actually it was guess number 2, an NGO (Non Governmental Organization)

Spanish police say they have arrested the representative of the left-wing Colombian rebel group Farc in Spain.
...
The Colombian authorities have recently warned that large amounts of money raised from cocaine by the Revolutionary Armed Forces of Colombia - or Farc - are often invested in Europe.

The BBC's Steve Kingstone in Madrid says it is alleged that under the cover of her job with a non-governmental organisation, Ms Garcia provided organisational support and funds to the Farc.