Two additional arrests have been made in connection with a daring daylight firebombing at an Adelaide supermarket last month.

The shocking attack, which unfolded in the middle of the day, left two butchers seriously injured.

Surveillance footage captured the dramatic scene, showing one of the suspected arsonists engulfed in flames after the attack.

In court today, it was revealed that one victim was soaked in fuel and feared for his life, believing the shop was on the brink of exploding.

Authorities detained a 40-year-old man yesterday, suspected to be the getaway driver, during a raid at a residence in Paralowie.

The accused driver allegedly used a black Lexus to flee the scene, colliding with several other vehicles in the process. 

He faces multiple charges, including arson, two counts of attempted murder, and six counts of endangering life. 

He was today denied bail to protect the safety of the victims and wider community.

Two other men had previously been arrested and faced court in connection with the firebombing. 

All three men will remain in custody until their next court appearance in April next year. 

A 37-year-old woman has also been arrested over the matter. 

She is accused of supplying the accelerant used in the attack and knowing its intended purpose. 

She has been granted bail and is scheduled to appear in court in January.

The investigation is ongoing.