A Tunis court has sentenced seven militants to life in prison over attacks at a museum and on a popular sea resort in 2015 that killed 60 people, many of them tourists, prosecutors said Saturday. Dozens of defendants faced two separate trials over the closely linked shootings, which occurred just months apart in Tunis and Sousse, but many were acquitted. Three were given life sentences for homicide over the first attack in March 2015 at the capitals Bardo museum, in which two gunmen killed 21 foreign tourists and a Tunisian security guard. Four received the same term for the shooting rampage in the coastal city of Sousse in June that year, which killed 38 people, mostly British tourists. Other defendants were sentenced to between six and 16 years, said prosecution spokesman Sofiene Sliti on Saturday. The court heard in the final hearing of the trial that the two attacks, both claimed by ISIS, were closely linked. Several defendants pointed to the fugitive Chamseddine Sandi as the suspected mastermind of both attacks. According to Tunisian media, Sandi was killed in a US air strike in neighboring Libya in February 2016, although there has been no confirmation. Among those who were facing trial were six security personnel accused of failing to provide assistance to people in danger during the Sousse attack. That shooting was carried out by Seifeddine Rezgui, who opened fire on a beach before rampaging into a high-end hotel, where he continued to fire a kalashnikov and throw grenades until being shot dead by police.  Four French nationals, four Italians, three Japanese and two Spaniards were among those killed in the Bardo attack, before the two gunmen themselves, armed with Kalashnikov assault rifles, were shot dead. Investigations showed one of the gunmen, Yassine Laabidi -- who was born in 1990 and was from a poor district near Tunis -- had amphetamines in his body.   His fellow attacker Jaber Khachnaoui, born in 1994 and from Tunisias deprived Kasserine region, had traveled to Syria in December 2014 via Libya. One suspect questioned in court, Tunis laborer Mahmoud Kechouri, said he had helped plan the Bardo attack, including preparing mobile phones for Sandi, a neighbor and longtime friend. Other defendants accused of helping prepare the attack said they had only discussed ideas with friends.