Jenny Birch, from the force’s homicide team, said Mr Alama was the victim of a violent attack.
“Yassin’s family have been left absolutely devastated by what has happened, and we are doing everything we can to support them, and to give them answers,” she said.
“We need to find and arrest Traore as soon as possible.”
If members of the public have any information on his whereabouts, they are asked to contact the force.
The Section 60 powers have been put in place around Lozells, Handsworth Wood, Witton and near Nechells.