A Texas toddler could have shot a two-year-old in the head after finding a gun that police said was not properly stored.

A family outside of Houston joined together for a casual gathering on Friday afternoon that unexpectedly resulted in gunfire. 

Deputies were called to Onaleigh Drive in the Channelview area, adjacent to Woodforest Boulevard and Dell Dale Street at 12.15pm, reported Fox26.

Juan, who declined to share his last name, told ABC13 that his grandson was the little boy who was shot. 

'My wife, she went to my room, freaked out, screaming loud like call 911, she cannot even talk, she had blood on all her clothes,' Juan told the outlet. 

Police said approximately seven adults were eating lunch in the living room while the two boys were alone in a bedroom.

Juan said he was sleeping when his wife woke him, demanding he call the police. 

As the family rushed to the bedroom, they saw the four-year-old holding the gun as the two-year-old bled out. According to Click 2 Houston, the boys are not siblings.

Officials said the two-year-old was alert and speaking before being life-flighted to the hospital. 

He underwent surgery in the intensive care unit and is now recovering in critical but stable condition. He is expected to survive.

The child's mother, reported KHOU, was at work at the time of the shooting, but police said at least one parent was present.

Juan told police that the firearm belonged to a family friend, 25-year-old Santiago Daniel Canet. He was among multiple people at the scene who were visiting the home from out of town. 

The traumatized grandfather claimed Canet's gun had typically been stored on the top shelf of a closet. But investigators said it was unsecured and accessible to small children. 

As a result, Canet was arrested and charged with making a firearm accessible to a minor. He was booked in the Harris County Jail. 

The Harris County Sheriff's Office said the family secured the gun when police arrived and everyone cooperated with the investigation. 

Crimes Against Children Investigators were also at the scene. County officials said Child Protective Services may become involved. 

The area around the home was taped off all day as police swarmed the scene, gathering preliminary information for the investigation. 

As of Friday afternoon, Major Ben Katrib stated that the information was still very limited. 

'All of this information is preliminary, of course and subject to change,' he told the press.

'It's always important to secure the firearm for anyone who is thinking about buying a firearm that does not have one,' Katrib added. 

'If you have children or children might visit your home, they are spontaneous, they are curious. So if you do not have enough money to buy a safe or anything to secure the handgun or any firearm, then you should not buy it.'

Sheriff Ed Gonzalez issued a statement after a second child was shot in a separate incident the same day. 

'Today is heartbreaking. Two children shot in separate incidents. Safe firearm storage saves lives,' he wrote. 'Lock it. Secure it. Keep it out of reach. This is about protecting our kids. We all have a role to play.'

A three-year-old suffered a gunshot wound in Houston on Friday afternoon, reported KHOU. 

Investigators said the shooting was believed to be 'negligent discharge,' though it is unclear who may have fired the gun. 

The child was taken to the hospital in critical condition but is expected to survive.  

The Daily Mail contacted the Harris County Sheriff's Office for more information.