Rabat, March 18 -- Police in Utrecht announced the arrest of the suspect of the shooting, which took place in a tram on Monday morning.

The attack, which is investigated as a possible act of terror, killed three people and injured five others. Police said they ruled out other reasons as motive of the attacks.

A source told Morocco World News earlier today that the the gunman opened fire over "family reasons."

Anadolu Agency quoted relatives of the gunman, who said that he fired at his relative for "family reasons."

The gunman identified as Turkish-born Gokmen Tanis, 37, reportedly shot at others who attempted to help the relative.

Utrecht police has not identified the nationalities of the victims killed in the shooting.

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