The command's public relations officer, Ahmad Muhammad, told the News Agency of Nigeria (NAN) in Port Harcourt that the command had received the report of the dynamite attack.
"I am aware of the incident at Okrika, but the information at my disposal is sketchy,'' Mr. Muhammad, a deputy superintendent of police, said.
He said that no arrest had been made.
The chairman of the party in the local government, Christian Asifamaka, had told newsmen that unknown persons used dynamite to attack the party's office in Abam-Ama in the early hours of the day.
The explosion which occurred at 3:14 a.m. destroyed our secretariat building, bringing down the walls.
"The damage was quite extensive with the chairman's office being the worst hit,'' Mr. Asifamaka said.
He said the party viewed the latest attack as a deliberate provocation by its opponents to draw it into a battle that would destabilise the local government.
He said that in spite of the attack, the party would tow the path of peace in the interest of the people of the area.
Okrika is the home town of First Lady, Patience Jonathan.
(NAN).