Three people were taken to hospital in the early hours after a fire in Pontypool.
It broke out in a two storey building in Lasgarn View just after 1.30am. Firefighters spent around an hour and half tackling the blaze.
The casualties are being treated for burns, shock and smoke inhalation.
An investigation continues into a house fire in which a 74-year-old woman died and a 73-year-old man was injured.
It happened in the Morriston area of Swansea on Saturday night.
South Wales Fire and Rescue Service says two men were taken to hospital in the early hours of this morning after a fire spread from rubbish outside to a kitchen in Merthyr.
They were treated for the effects of breathing smoke after the blaze at Ynysfach.
2 male casualties were treated for smoke inhalation following a fire deliberately started outside spread to their home in Merthyr at 03.59
Update Merthyr: The refuse fire spread through door frame into the kitchen Merthyr crews attended 2hosereel jets used
Firefighters are still at the scene of yesterday's blaze at Wentloog on the outskirts of Cardiff.
At its height around 30 were involved in tackling the fire which set alight 2000 tons of rubbish.
A review of the incident will be held at 0700.
Around 25 firefighters tackled a blaze last night at Robertstown Industrial Estate in Aberdare.
Noone was hurt but a disused factory unit was damaged.
A man has pleaded guilty to setting fire to Aberfan Chapel. Daniel Brown told police he gets a 'kick' out of arson.
Daniel Brown, of Nixonville, Merthyr Vale, was charged with reckless arson with threat to endanger life. Much of the chapel at Aberfan was destroyed by the fire last month.
Brown told police he gets "a kick" out of seeing the fire service turn up. He set his own house on fire when he was nine years old. The court heard that he had called in the emergency services himself when they didn't turn up and "enjoyed being involved in this type of activity".
Wearing a grey t-shirt with short brown hair, Brown confirmed his name and guilty plea. The judge at Merthyr Crown Court told him to expect a lengthy prison sentence.
Psychiatric reports will be completed before he is sentenced next month.
A man is in hospital after falling 20 feet (6 metres) from a temporary scaffold at a chapel in Rhymney.
Four fire crews from Merthyr, Barry and Malpas were called at 9.27am this morning to help the man at the building on Carno Street. They used specialist equipment to rescue him.
Merthyr crews are responding to rescue a male fallen from a scaffolding tower in a Chapel in Rhymney 09.27
Update Merthyr: Male injured casualty fallen approx 20ft from scaffolding to first floor. Line rescue crews assisting with rescue
Update Merthyr: Casualty now taken to hospital after being rescued by crews using line rescue basket stretcher and oxygen therapy
Firefighters in Cwmbran have been attacked with stones, as they battled to put out a fire in woodland. One of the crew was struck on the head during the incident in the Greenmeadow area of the town, last night. South Wales Fire and Rescue say around 30 youngsters were at the scene.
South Wales Fire and Rescue service says a pub in Caerphilly has been damaged by fire overnight.
More than 20 firefighters were called out to the Irish Tymes on Station Terrace just after 11.30pm.
Around half of the two storey building has been damaged.
There are no reports of injuries.
At 23.33 we received a 999 call to a fire at The Irish Times Public House in Caerphilly. Crews from Caerphilly x 2 and Whitchurch responded
Update Caerphilly: Crews arrived on scene within 4 minutes and reported the fire was on the first floor and they were searching for people
Around half of the building has been badly damaged, a spokesperson said.
Crews and investigation teams will remain on the site throughout the morning.
More than 20 firefighters are tackling a blaze at a disused pub in Ebbw Vale.
They were called out at around 3.30am. The fire is in the first floor and roof of the building in Beaufort Rise, Rassau.
There are no reports of casualties.
#SWControl - Road closure in operation Beaufort Rise, Rassau Rd area Ebbw Vale. Please use alternative route. CLH
Update Rassau: Crews currently remain at the scene and road closures are still in place. fire investigation is being conducted