Staff at Lougheed House in Calgary have reported the historic estate was targeted by vandals over the weekend – days after former Premier Peter Lougheed passed away.

According to reports, the mansion was targeted at some point late Saturday or early Sunday.

The vandals apparently managed to climb up to the second story of the mansion, and tag the metal roof of the secondary tower with graffiti.

A chimney and an east-facing sandstone wall were also spray-painted.

The mansion was once owned by Peter Lougheed’s grandfather, Sir James Alexander Lougheed.

It was built in 1891, and was originally known as ‘Beaulieu’.

The house is now operated by the Lougheed House Conservation Society – after it was designated a Provincial Historic Resource in 1976, and the Historical Society of Alberta researched the possibility of restoring the building in 1988..

Lougheed House was declared a National Historic Site in 1995, and opened as a Public Heritage Centre in 2005.

With files from CTV Calgary