Spanish authorities have arrested four Moroccans on suspicion of membership of a radical Islamic group on the Canary Islands, the interior ministry said Saturday. One of the suspects, who are believed to be members of the Islamic Group of Moroccan Fighters, was wanted for a possible link to the Madrid train bombings in March. Investigators said the group was about to set up a logistical base in the archipelago off the coast of northwest Africa. It is believed to be part of the extremist Jihad Salafist Movement and to have ties to Osama bin Laden's Al Qaeda network, they added.Among those arrested on the island of Lanzarote were the imam of the village of Puerto del Carmen, Abdallah Mourib, as well as Hassan El Haski, 41, who was wanted for his suspected role in the March 11 attacks on commuter trains in the Spanish capital which left 191 people dead and some 1,900 wounded. Haski, who was born in Guelmin, Morocco, has been under investigation for his suspected ties to the Islamic Group of Moroccan Fighters which is believed to have carried out bomb attacks in Casablanca in May last year that killed 45 people. The interior ministry said Haski managed to flee when Belgium and France cracked Islamist networks in their countries. He is believed to have given orders to Mourib, 36, and Ali Fahimi, 31, another suspect who was among those arrested in Lanzarote and detained at Playa Blanca-Yaiza. The fourth suspect, who was also detained at Playa Blanca-Yaiza, was identified as Brahim Atia El Hammouchi, 40. Police said the group made several trips to Europe, notably Belgium and the Netherlands, but always returned to the Canary Islands where they felt safe after the arrests made in Belgium and France.