SA man detained over anti-mosque comment

A firearm featured in an inappropriate social media post in which an Adelaide man appeared to threaten violence against a local mosque is a toy, but has been seized.

Police say the 29-year-old man was detained on Sunday night under the Mental Health Act.

He has since been released from hospital and no charges have been laid.

The man had posted a picture of himself holding what appeared to ben an automatic rifle.

In an accompanying post he, wrote: "on my way to my local mosque to introduce these f****** to my lord and saviour Jesus Christ, Amen".

Police confirmed on Monday that the "inappropriate comments" were posted on the man's Facebook page.

"This man was pictured in a Facebook post holding what appeared to be a firearm," police said.

"Police have seized a firearm believed to be the one displayed in the post. This is confirmed to be a toy.

"No criminal charges have been laid at this time but investigations are still continuing."