Nigerian President Goodluck Jonathan is to tighten security and name a special advisor on terrorism after a week of bomb blasts that claimed dozens of lives, his office said on Monday. The announcement came after Jonathan held emergency talks with his security chiefs that concluded that the Christmas Eve and New Year's Eve attacks were "acts of terror carried out by criminal elements within our midst," it said. Jonathan "in the next one week, is to appoint a special advisor on terrorism," his spokesman Ima Niboro told reporters. The president would also work with the parliament "to ensure speedy passage of an anti-terrorism bill," he said.