At least 91 people were killed when a suspected gunman in police uniform opened fire on a youth camp of Norway’s ruling labor party and in another blast in Oslo.

Police have charged a 32 year old Norwegian, who moved across the small, wooded island of Utoeya in a lake northwest of Oslo Friday, firing at people.

Police said they are investigating whether the attacks were carried out by one man or whether a group is involved in it.

Here are some pictures of the attacks: