Calgary police will question the former gang member brother of a man gunned down Monday in the front entrance of his home.

Police identified Heng Donny Zu Zhi, also known as Donny Tu, 41, as the man killed by a single gunshot wound around 1:30 a.m. in the entranceway of his NW Edgeridge Green home, police said yesterday.

Calgary police spokes­person Kevin Brookwell said that Tu’s brother, former gang member Hui Heng (Philip) Xu, will be questioned in the investigation.

However, the motive behind the homicide is unclear at this time, he said.

“We don’t want to speculate ... or narrow the investigation to what is seemingly the obvious connection to the brother,” said Brookwell.

Police do not know whether Tu has received threats or attempts on his life previously.

The homicide unit is still investigating. The gang and drug units have not been called in, according to Brookwell.

Police do not have any suspects at this time.

Tu is Calgary’s seventh homicide of 2010.

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