Addressing a news conference in Zagreb, Seks said that judicial agencies were exposed to "legally and morally unacceptable pressure" and that there were attempts to politically eliminate PM Kosor and the HDZ leadership.
Seks said that it was an absolute untruth that the HDZ was orchestrating a political process against Polancec.
The HDZ official also accused Polancec's lawyer Anto Nobilo of having violated the lawyers' ethics when saying that the proceedings against his client were politically motivated.
Seks found it disputable when Nobilo accused courts and prosecutors of shunning the truth and of failing to raise the issue of the responsibility of the entire government when it comes to contracts between the national power supplier HEP and the TLM metal company.
Nobilo's claims that pressure was mounting on his client to testify against former Prime Minister Ivo Sanader were interpreted by Seks as an unacceptable attempt by the lawyer to interfere with the judiciary.
Asked whether HDZ representatives in the government would testify in the proceedings against Polancec, Seks said that Nobilo had the right to propose anyone for a witness and that it would be up to the court or the USKOK anti-corruption investigating agency to summon witnesses and that HDZ members would comply with possible summons.
Andrija Hebrang warned against mixing political and criminal responsibility, and in this context he criticised those who claimed that the government had caused HRK 600 million in damage to HEP.
Hebrang said that the relevant decision and contract on more favourable electricity prices for TLM had saved 1,400 jobs in the Sibenik-based company and helped the business operations of the Ploce seaport and the Mostar-based Aluminij plant. Hebrang recalled that the Croatian government held a 11-percent stake in the aluminium manufacturer in Bosnia-Herzegovina.
"Political and economic decisions should be viewed through their results, which in this case were positive," Hebrang said.
Asked whether the current Prime Minister should resign in case elements of crime were found in the privatisation of the TLM company, as she had signed a decision on the privatisation, Hebrang answered in the negative.
The Prime Minister signed the decision which proved to be good and as she was signing it she could not know whether somebody would perpetrate a criminal offence in three weeks' time, since she is not psychic, Hebrang said.
Bacic dismissed claims by Social Democratic Party members in Rijeka that Slovenian Prime Minister Borut Pahor had stated that Kosor had promised him that Slovenia would have access to the high seas.