UPDATE: A man accused of setting fire to his Centenary Heights home was tasered before police arrested him during a confrontation in the Lockyer Valley.
Gatton police officer-in-charge Senior Sergeant Tom Missingham said the 23-year-old was disturbed in bushland near a house on Sandy Creek Rd at Grantham at daybreak.
Emergency service personnel including police and rural and urban fire fighters attended the scene and tried to locate the man after he ran into bushland and scrambled over a cliff.
Snr Sgt Missingham said it appeared the man may have been disoriented.
Police were then called to a stealing incident from a Turner St address in Helidon about 7.40am.
Darling Downs District officer Inspector Mike Curtin said the man became aggressive towards police.
"As they were getting out of the car, he has come at them," Insp. Curtin said.
"He has gone and hit the door (of the car) and started swinging punches at the officer."
Insp. Curtin said a Helidon officer tasered the man before a short struggle, in which the 23-year-old was overpowered and arrested.
The man was charged with stealing, assaulting police, obstructing police and trespassing in relation to the morning's incidents.
He was also charged with causing wilful damage by fire in relation to a blaze in the garage of his McHardy St unit on Wednesday afternoon.
Other charges against him include wilful damage and possession of a utensil.
The man is due to appear in custody in Toowoomba Magistrates Court tomorrow.
EARLIER: Police have charged a 23-year-old man with starting a fire that caused damage to the Centenary Heights home in which he lived.
Officers interviewed the McHardy St resident this morning before charging him with causing wilful damage by fire.
Fire crews were called to the unit yesterday afternoon after smoke was noticed billowing from behind a garage roller door.
They were able to contain the blaze before it spread further into the unit.
The man is due to appear in custody in Toowoomba Magistrates Court later this afternoon.
EARLIER: A Centenary Heights home has been damaged by fire and it could have been worse had two tradies not sprung into action.
The McHardy St unit was under police guard last night as detectives, scenes of crime officers and fire investigation specialists searched for signs of the fire's origin.
Builder Jim Manteufel and carpenter Matt Burke were working on a nearby site about 3.20pm yesterday when Mr Manteufel smelled burning plastic.
"We could see smoke billowing out of that unit," Mr Manteufel said.
He was on the roof of the site so he yelled out to Mr Burke on the ground, who ran over to the unit to help.
Smoke was pouring out from behind a garage roller door.
"I tried my best to put it out with a garden hose," Mr Burke said.
He tried the front door of the unit, but no one appeared to be home so he ran to a neighbouring unit to alert resident Morris Fuller.
It was the first Mr Fuller knew of the danger.
"I couldn't smell a thing," Mr Fuller said.
"It was a bit of a shock."
After being alerted to the blaze, Mr Fuller made sure no one was trapped inside.
"I put my shoulder into the front door."
When it flung open, he couldn't find anyone inside.
"I had to come out because of the intensity of the smoke."
Fire crews were able to extinguish the blaze before it spread into the home.
Residents of the unit were not home at the time, but returned later in the evening to survey the damage.
The cause of the fire is under investigation.