A van carrying gas bottles was driven into the Canberra office of the Australian Christian Lobby, causing an explosion and damaging the front of the building.
The lobby manager tweeted the pictures of the vehicle, describing the Wednesday night's incident as a "car bomb".
"A vehicle has rammed our office in Canberra & exploded. All staff are safe. I do not know the condition of the driver. Prayers appreciated.
"A closer view of the car bomb driven into the ACL office in Canberra tonight. Shocked that this could happen in Australia," Lyle Shelton tweeted.
A man is believed to have driven the white van towards the Eternity House building about 10.45pm on Wednesday night, News Corp reported.
It is believed the alleged driver is receiving medical attention but there had been no arrests made yet.
By 6am, the van had been cleared away with the strong smell of gas remaining outside the office.
Debris from the vehicle have been left behind, including a Toyota badge.
The front windows of the two-storey building are smashed on both levels with mangled window blinds and light fittings hanging from the ceiling.
A phone continues to ring unanswered inside.
The office is located in a quiet street, less than a 10 minute drive from Parliament House.
ACT Police are expected to update the media on Thursday.
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