Gunmen attack a coffee shop in Potiskum , killing two . In Damaturu , protesters first attack police , before spreading to churches , mosques . ` ` It is a very bad situation , '' a Red Cross official says .
Gunmen attack a book shop in Potiskum , killing 2 . In Damaturu , gunmen first attacked police offices before moving to churches , mosques . `` It is a very bad scene , '' a Red Cross official says .