A man is set to appear in court today, accused of launching an assault on a north-west Sydney residence using firearms and explosives.

On Thursday, November 27, two individuals reportedly attempted to break into a home on Loura Street in Tallawong with a sledgehammer.

One suspect allegedly tried to fire a gun at the house. When the weapon malfunctioned, he resorted to tossing a stun grenade inside instead.

Subsequently, the duo retrieved a second firearm from their vehicle and discharged two shots towards the residence.

Fortunately, the two people inside the home were unharmed during the incident.

After the attack, the alleged perpetrators fled the scene in a Mazda CX5 but ended up crashing the vehicle on Ashburton Crescent before escaping on foot.

They were tracked by the police dog squad to First Ponds Creek, where officers found the men’s clothing, including a balaclava, hooded jumper, pants and gloves.

During a search of the vehicle, police seized a live grenade, two firearms – including a loaded one – a magazine, a mobile phone and other items including bleach and clothing.

Police bomb disposal experts and Australian Defence Force personnel were called to safely remove the grenade.

Following inquiries to identify and find the men, about 10.15am yesterday, detectives arrested a 19-year-old man in Austral.

He was later charged with firearms, burglary and driving offences.

He was refused bail and is due to appear in court today.

Inquiries are continuing.