The explosions appeared to fit a growing pattern of suicide bombings by Chechen rebels.
Officials here said the incident fit a pattern of suicide bombings by women, which began in the Chechnya region late last year.
They appeared to fit a growing pattern of suicide bombings that have struck both government and civilian targets in and around Chechnya.
The attacks against the council buildings in Tikrit and Baquba are part of a broader pattern of assassinations, bombings and assaults aimed at Iraqi politicians and security forces.
The pattern of the bombings, and their anonymity, made them seem designed to terrorize, and speculation had begun to spread national papers suggested that someone was targeting prominent African-American citizens in Austin, and suspicions on social media tended to point to white supremacists.
The site of the attacks, Marjeh Square, has been hit previously in what has become a pattern of car and suicide bombings in the capital's heart.
Bomb Data Center, the number of bombings in the….
The bombings followed a pattern of attacks in and around Chechnya recently.
The bombings extended a pattern of multiple-casualty attacks in recent days that are clearly intended to kill local Iraqi leaders, in particular those who are believed to have collaborated with American forces against insurgents.
The bombings follow a pattern of recent suicide attacks that military officials say is a sign militants are hitting back at the forces that are pursuing them the hardest in what is a growing struggle.
