One PKK suspect arrested in Denmark, DHKP-C suspect caught in Spain, according to security sources
The suspect is also accused of going to terrorist camps in northern Iraq.
The PKK -- listed as a terrorist organization by Turkey, the U.S. and the EU -- resumed its armed campaign against Turkey in July 2015.
Since then, it has been responsible for the deaths of more than 1,200 Turkish security personnel and civilians, including a number of women and children.
Separately, a suspected member of the far-left terrorist DHKP-C also wanted under an Interpol red notice was arrested in Spain.