Speaking on Croatian Radio on Monday, Seks said the speculation in the British media that the growing Euroscepticism in Croatia was behind the attack was "entirely unfounded and untrue".
"The growing Euroscepticism in Croatia originates from an entirely different place which doesn't justify such speculation," Seks said, adding that the British media "should wonder where the antipathy towards Great Britain stems from, and not immediately put everything down to Croatia, which has nothing to do with this".
Seks said he was certain the explosion at the embassy which lightly injured a staff member was yet another in a series of attacks on British interests and property around the world and that the ongoing investigation would prove that.
He said today's attack showed it was necessary to eliminate the causes of terrorism, but also that Croatia should consider all security aspects in order to protect the lives and property of its citizens as well as all diplomatic and consular personnel in the country.
Asked by listeners if Defence Minister Berislav Roncevic should be held to account for claiming yesterday that he did not expect terrorist attacks against Croatia, Seks answered in the negative.
"According to all I know and the information from all our security agencies, we are safe from terror attacks against Croatia. I assume that today's attack wasn't against Croatian but against British interests, so Minister Roncevic's political assessment was in order," said Seks.