Chilling photos released for the first time reveal the devastation inside Pulse nightclub where 49 people lost their lives.

Photographs taken nine days after the massacre show large holes caused by bombs detonated by SWAT teams and shed new light on the efforts to rescue those held hostage in the nightclub by Omar Mateen, 29, who later died in a shootout with police.

Mateen, who had pledged allegiance to Islamic State, carried out the attack on the evening of June 12, 2016. It is recorded as the worst mass shooting in the history of the United States.

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New photos have been released showing the devastation at Pulse nightclub after the deadly shooting by Omar Mateen in June 2016

The haunting images show blood spatters remaining from the deadly attack last summer

Chilling photos showing the devastation at Pulse nightclub give an inside look to where 49 people spent their final moments

Large holes from bombs detonated by SWAT teams show the lengths police went to to rescue hostages inside the nightclub

Authorities blew holes through the exterior of the building to rescue revelers

The outer deck of the nightclub in disarray with overturned couches and smashed electronics

Shooter Omar Mateen, 29, later died in a shootout with police and pledged allegiance to ISIS

A missing air vent in a blue painted bathroom shows where authorities removed the vent so that hostages could crawl out to safety

Investigation of a back office in the club reveals blood spattered rug and boxes

The club, now closed permanently, was located at 1912 S Orange Ave, Orlando, Florida

Newly released images show the shocking aftermath of the deadly shooting

The massacre at Pulse, considered the worst mass shooting in modern US history, claimed 49 lives (pictured) and left dozens injured last June

Gunman Omar Mateen (pictured), who was killed in a shootout with SWAT team members after a three-hour standoff, pledged allegiance to the Islamic State group

The photos, released by the city of Orlando on Tuesday, show where officers breached one of Pulse nightclub's walls to free people trapped inside around 5am. The photos, taken nine days after the attack, give the first comprehensive look at the devastating scene.

Large punctures to an exterior cinderblock wall of the nightclub can be seen, and a missing air vent in a blue painted bathroom shows where authorities removed the vent so that hostages could crawl out to safety.

On the other side of the building is a bathroom where patrons were trapped for more than three hours during the police standoff with Mateen. He was killed once SWAT teams breached the bathroom wall and freed those held hostage.

Another 53 people were injured in the shooting, some still regaining their strength more than seven months after the attack.

Orlando hospitals waived the medical fees of those treated after the shooting.



Another 53 people were injured in the shooting, some still regaining their strength more than seven months after the attack. Orlando hospitals waived the medical fees of those treated after the shooting

Glass shattered by bullet holes is seen at the entrance to a co-ed bathroom

The photos, released by the city of Orlando on Tuesday, show where officers breached one of Pulse nightclub's walls to free people trapped inside

SWAT team members blew through the exterior wall to rescue those trapped inside

Mateen killed 49 and injured another 53 in the worst mass shooting in US history

Dividing structures in the bathroom came crashing down during the explosions

On the other side of the building is a bathroom where patrons were trapped for more than three hours during the police standoff with Mateen

He was killed once SWAT teams breached the bathroom wall and freed those held hostage

Hostages were held for more than three hours in the bathroom during the shootout

Blood, dust and debris are all that remains from the horrific night

Mateen's wife, Noor Salman, appeared on Tuesday in federal court in Oakland, California, on charges of aiding and abetting her husband.

Orlando Police confirmed she was charged with helping her husband Omar Mateen 'in the commission' of the attack, but have not yet revealed specifically how they believe she helped him, what material support they believe she gave to the group or whether she knew what he was planning.

The pair exchanged text messages during Mateen's four-hour rampage on June 12.

Salman sent a message to her husband after 2am after being woken by a phone call from his mother asking where he was.

'Do you see what is happening?' he responded. She text back 'no' to which he replied 'I love you, babe.'

In her only interview since the atrocity, she told The New York Times: 'I was unaware of everything.

Salman,left, previously claimed she was 'unaware' of her husband's murderous plan

Orlando Police Chief John Mina said he was 'glad someone will be held accountable' for the attack.

'Federal authorities have been working tirelessly on this case for months and we are grateful that they have seen to it that some measure of justice will be served in this act of terror that has affected our community so deeply.

'Nothing can erase the pain we all feel about the senseless and brutal murders of 49 of our neighbors, friends, family members and loved ones.

'But today, there is some relief in knowing that someone will be held accountable for that horrific crime,' he said in a statement.

Broken glass can be seen throughout the nightclub in the aftermath

Orlando Police Chief John Mina said he was 'glad someone will be held accountable' for the attack after the arrest of Mateen's wife

Many were held hostage in a bathroom for up to three hours during the shootout

Pulse owners want to establish the nightclub as a place for reflection on the tragedy

Debris was left in the wake of the blows as SWAT teams assisted to help hostages

Several blasts were targeted to the building's exterior

A bullet struck the helmet of a SWAT team member, though no officers were killed that night

Since the shooting, the families of three men killed are suing Facebook, Twitter and YouTube owner Google, saying the organizations are responsible for the men's deaths.

Tevin Crosby, Javier Jorge-Reyes and Juan Ramon Guerrero were among the 49 people killed when Mateen went on his June 12 rampage.

Now their relatives are accusing the web companies of giving ISIS 'material support' when they provided it 'with accounts they use to spread extremist propaganda, raise funds, and attract new recruits'.

'Without Defendants Twitter, Facebook, and Google (YouTube), the explosive growth of ISIS over the last few years into the most feared terrorist group in the world would not have been possible,' they said, according to Fox News.