Tunisia | Beach killer trained with museum gunmen 

The student who massacred tourists in a Tunisian seaside resort trained in a jihadi camp in Libya at the same time as the two men who attacked a leading museum in March, a top security official said Tuesday, enforcing the notion of a link between the two assaults and raising fears of more attacks from an underground world clawing at this North African nation’s budding democracy.
Investigators were searching nationwide for accomplices in the attack that killed 38 tourists and questioning a handful recently detained.
“It has been confirmed that the attacker trained in Libya with weapons at the same period as the Bardo attackers,” said Rafik Chelli, the secretary of state for the Interior Ministry. “He crossed the borders secretly.”
Chelli said Seifeddine Rezgui, a 24-year-old who obtained a Masters degree in electrical engineering, left his studies at Kairouan University and sneaked into the western Libyan town of Sabratha in January — when the two young men who carried out the museum attack in Tunis were there.
Sabratha, the site of Roman ruins, is one of several places in chaotic Libya where radical groups have training camps. The Islamic State, which has a strong Libyan presence, claimed responsibility for the beach resort attack.
There has been no previous indication that Rezgui had left Tunisia.
The invisibility of the attacker, like those who carried out the Bardo attack, is for Tunisia and elsewhere, the biggest challenge in preventing terrorism.
The spokesman for the Interior Ministry, Mohamed Ali Aroui, said it was not immediately clear whether Rezgui trained in the same group as the Bardo attackers or whether they were linked to the Islamic State organization.
But the presence of radical groups in Libya increases the threat level to its Tunisian neighbor, as does the approaching end of the Muslim holy month of Ramadan.  Bouazza Ben Bouazza and Andrea Rosa, Tunis, AP