Yes, this is true. Spanish authorities recently arrested 10 Pakistani nationals in Barcelona, along with one in Italy, for their alleged involvement in a terrorist network linked to Tehreek-e-Labbaik Pakistan (TLP), a far-right Islamist movement. 

The group reportedly incited violence, glorified attacks in Europe and Pakistan over blasphemy accusations, and had begun identifying potential targets for attacks. Four of the suspects have been detained while investigations continue.