The releases last night came ahead of a visit by UN special envoy Ibrahim Gambari to seek reconciliation between the junta and democratic forces since month's demonstrations led by Buddhist monks, the biggest protests in the Southeast Asian nation in nearly two decades.
The seven had been detained at the infamous Insein Prison in Yangon, said Nyan Win, spokesman for Suu Kyi's National League for Democracy party.
They included party spokesman Myint Thein and six others: Han Zaw, Lei Lei, Ko Bala, Cin Shin Htan, Htaung Ko Htan and Win Naing, the spokesman said.
"All these people had been arrested unnecessarily and we demand the immediate and unconditional release of all those detained arbitrarily," another NLD spokesman Han Tha told The Associated Press. He added that at least 150 party members out of nearly 300 who had been arrested since September remain in detention.
Han Tha said many of them have been denied proper medical treatment and were living in harsh conditions.
The government had earlier said it detained about 3,000 people in connection with the protests but had released most of them. Many reports have emerged of brutal treatment in custody.
The league said many of the detainees were questioned about links between the party and the protests, which were led by Buddhist monks.
