Governor Rotimi Amaechi of Rivers State has said there is no democracy yet in Nigeria.
He described the form of government being practiced in Nigeria as diarchy.
The governor, who spoke in Abuja on Saturday while reacting to the invasion of the National Assembly by the police on Thursday, described the action as uncivilised.
He said the actions of the police in recent times had shown that they had been pocketed by the Presidency and the ruling Peoples Democratic Party.
He said, "We don't have democracy in Nigeria yet. What we have is diarchy. We don't have a democracy. Diarchy is dictatorship.
"The Federal Government has appropriated the police as its personal property. The FG has taken over the police.
"See the way the police took over the National Assembly. By law, the police has no power to invade the National Assembly and they have no power to stop the speaker from going in or out. But they don't obey law."
He insisted that his party, the All Progressives Congress, would not go to court if the PDP decides to rig the 2015 presidential elections.
Instead of going to court, he said the APC would form a parallel government.
He said, "What is the essence of going to court when the federal government don't obey the law. That's why the APC say we won't go to the court any longer.
"If you rig us out, we would rig ourselves in. Which means if you think you can rig us out in 2015, we will form our own government. We have met on that and we have agreed on that. We will install our own government and there would be two governments.
"The only way to avoid a parallel government is to have a free and fair election. You can't continue to use the police as if it is private agency or company of the government."
While saying that the Police in South Africa is currently investigating President Jacob Zuma, he wondered if the police in Nigeria would be allowed to play such role in the country.
"Are you are aware that the president of the South Africa is being probed by the police? Can that happen here? In this country, they slap judges, seven members of a state (Ekiti) house of assembly claimed they have sacked a speaker," he added.
On Boko Haram, the governor said it would be difficult to convince Nigerians that the Federal Government was not deliberately allowing the crisis to continue in order for it to decimate the votes that would come from the North-East in 2015.
The zone is considered to be a stronghold of the opposition.