Six Pakistanis and a Nigerian suspected of providing forged passports to Lashkar-e-Taiba and groups linked to Al-Qaeda, in particular those behind the 2008 attacks in Mumbai, have been arrested by Spanish police, the interior ministry said on Wednesday.

Three others -- two Pakistanis and a Thai national -- were held in Thailand as part of the same Operation Kampai, it said in a statement. Officers detained the suspects in raids in and around the northeastern city of Barcelona late on Tuesday.