Police have set off four controlled explosions in the backyard of an Adelaide home, but say the incident is not connected to terrorism.

Key points: Davoren Park man Aaron Ellis has appeared in court charged with making explosives

Davoren Park man Aaron Ellis has appeared in court charged with making explosives Police say he has "anti-Muslim views" but deny Mr Ellis was threatening violence

Police say he has "anti-Muslim views" but deny Mr Ellis was threatening violence The bomb squad conducted four controlled explosions in the home's backyard

The home at Heytesbury Road at Davoren Park, in Adelaide's north, was raided by police on Monday night and "explosive-related material" was allegedly found.

Properties surrounding the home were evacuated as emergency services prepared to detonate the explosive materials known as "Mother of Satan".

Four explosions were heard from the backyard of the house between 3:10pm and 4:40pm on Tuesday.

Aaron Ellis, 43, has been charged with possession and manufacture of explosives.

He appeared in the Elizabeth Magistrates Court and has been remanded in custody.

Accused man Aaron Ellis. ( Facebook )

Acting Assistant Commissioner Craig Patterson said it was "not a terrorism-related incident".

"Inspectors are assisting the local district officers in this investigation," he said.

"The accused is known to police and officers had interaction with him on two occasions earlier this year."

Brevet Sergeant Daren Cross told the court earlier that Mr Ellis had come to the attention of police in February after he posted on social media that "he hated Muslims".

"No action was taken by police at the time as there was insufficient evidence to take action," Assistant Commissioner Patterson said at a press conference on Tuesday afternoon.

"The accused may have some right-wing, even nationalist anti-Muslim views and I stress they are only views to our knowledge which [police] have … further explored.

"There are no indicators of any violence or threats of violence to any member of a community.

"And I can reassure the public that at this point in time we have no information that this person was making a threat or intending to use violence against anyone."

Nothing 'constituting' an offence in February

Sergeant Cross told the court "there was nothing to cause grave concern" in February.

"The reason they went there was because he put a post on Facebook stating that he hated Muslims," he said.

"They couldn't find anything constituting an offence on that occasion."

The court heard police received "fresh information" on Monday that the accused was in possession of chemicals.

"Police attended with [the] bomb squad … [and] he explained that he mixed the chemicals into a substance referred to as 'Mother of Satan'," Sergeant Cross said.

"Bomb squad members have advised that it will need to be detonated in situ.

"They have sealed off the area … it's likely that the local neighbourhood will be evacuated."

Explosive devices allegedly found by police in a Davoren Park shed. ( Supplied: Elizabeth Magistrates Court )

Suspect would 'continue bomb making', police say

"Mother of Satan" is a nickname for triacetone triperoxide, also known as TATP, which has previously been used in attacks around the globe and is manufactured with household chemicals.

"This is a highly volatile explosive and cannot be transported," Sergeant Cross said.

The chemicals found at the Davoren Park property were housed in a garden shed, and police earlier said they expected the shed would be destroyed in a controlled detonation.

The alleged chemicals found at the home in Davoren Park. ( Supplied: Elizabeth Magistrates Court )

Holes were later dug in the backyard of the home surrounded by sandbags.

"There is potential that had it not been located that it could have caused substantial damage and injury," Sergeant Cross said.

"From my information on file from the bomb squad they have come across this type of explosive once before interstate where a person lost their hands, that's how serious the chemicals are."

Sergeant Cross opposed releasing Mr Ellis on bail.

"We would be opposing bail because between February and the incident yesterday, that's just a matter of eight weeks, he has managed to get all these chemicals, he's managed to find information on how to make bombs and explosive material," he said.

"We have concerns that if he's released there is potential for him [to] obtain these chemicals and continue to do his bomb making for whatever reason, we don't know."

The court heard police had seized his phone and computer and that further charges could be laid.

Suspect is an amputee who 'abhors violence'

Defence lawyer Josh Bach called for Mr Ellis to be released on home detention bail to live at his daughter's house.

"Mr Ellis is someone on bail who would not pose a significant risk to the community," he said.

"[He] is missing one leg, he lost that leg in a motorbike accident some 25 years ago, he needs the assistance of crutches to walk around.

"He has no criminal history of violent offending. I'm instructed that he abhors violence and that he is very distressed at the suggestion."

Heytesbury Road at Davoren Park where explosive materials were allegedly found. ( ABC News: Sarah Mullins )

Magistrate Gary Gumpl remanded Mr Ellis in custody to face court again next Monday when he will consider whether he should be released on home detention bail.

"I suspect that your client is in this invidious position where he doesn't want to talk about the offences out of fear of incriminating himself and yet without explaining the reason behind this he's going to have difficulty getting bail," Mr Gumpl said.

Earlier, local residents told the ABC they had been warned by police to stay away.

"They told me they'd found explosive devices or the makings of explosive things and it was dangerous, and either to stay inside or go, so I'm going," neighbour Cynthia said.

Another neighbour Renee McKelvie, who lives two doors down from the property, said emergency services had "put sandbags down near the driveway".

"If people are inside they've asked them to stay away from the windows and doors, but they would rather people out," she said.