A quote from The Local [Sweden], 21 May 2008

Two people have been taken into custody on suspicions of preparing acts of sabotage at the Oskarshamn nuclear plant on Wednesday morning, according to police and plant operators, reports the Kvällsposten newspaper. [...] “The explosive material has been taken care of by ... police and apparently it is highly explosive, probably TATP," [Sven-Erik Karlsson of the Kalmar county police] said. TATP is relatively easy to make and has surfaced in a number of recent terrorism investigations, including bombings in the Middle East and the London bombings in July 2005. […] Swedish Environment Minister Andreas Carlgren said Wednesday’s security scare was a wakeup call. “This reminds us of how vulnerable nuclear power can be to sabotage attempts and other human failures,” he told the regional daily Kvällsposten’s website.