Русско-англо-русский юридический словарь

The police appealed to the public for information, stating that they needed help in finding those who had committed the crime. The murder weapon was described as a black handgun with a long barrel. More than 300 officers and gun crime specialists were deployed in the hunt for the killer. (Wikipedia, Murder of Rhys Jones)

Four members of his family were killed by a contract killer who went to the wrong house. (Independent)

The European Commission and Russian scientists are collaborating on a project to use nuclear weapons to stop Earth-bound killer asteroids from crashing into our planet. (Market Business News)

The primary crime scene is where a crime actually occurred. A secondary crime scene is in some way related to the crime but is not where the actual crime took place.

In a bank robbery, for example, the bank is the primary scene, but the get-away car and the thief’s hideout are secondary scenes. In the case of a killer who commits a murder in someone’s home but transports the victim’s body to a river for disposal, the victim’s home is the primary scene, and the killer's vehicle and the point along the river where the body was dumped are secondary scenes. (Dummies)