text: Two brothers who died after one of the boys shot the other then turned the gun on himself have been laid to rest in a joint funeral. Kevin Pimentel, 12, shot dead his six-year-old brother, Brady, as they made dinner inside their mobile home in Hudson, Florida last week - before shooting his older brother in the leg and then taking his own life. The injured brother, 16-year-old Trevor, attended the boys' funeral at St. James the Apostle Catholic Church in a wheelchair on Wednesday, while his divorced parents, Helen Campochiaro and Luis Pimentel, were seen receiving hugs from well-wishers  before the service. As many as 400 people attended the memorial for the boys, who would've celebrated their birthdays this week; Kevin would have turned 13 on Monday and Brady would have turned seven on Friday, the Tampa Bay Times reported. Loss: Kevin Pimentel, 12, (left) shot dead his six-year-old brother, Brady, (right) before taking his own life in their Florida home as they made dinner last week. The two boys were laid to rest on Thursday . Mourners leave the funeral in Port Richey, Florida as the boys' older brother Trevor Pimentel, 16, who was shot in the leg in the incident, is helped into a waiting limo. The three boys had been home alone at the time . At the service, the Reverend Mike Cormier said the boys were now 'at the world's greatest sleepover'. The youngsters died while they were home with their 16-year-old brother. Their mother, who works two jobs to keep the family afloat, and another brother, 18, were not home at the time. Officials said there was no argument or incident that sparked the gunfire. According to a statement the Pasco County Sheriff's Office released on Thursday, Kevin was making dinner in the family's  home  and asked his older brother, Trevor, to help. Using a gun kept on the top shelf in a closet area of the family's mobile home, Kevin then shot Brady in Brady's room, Trevor told police. After wounding his older brother in the leg, he then turned the gun on himself. The deaths came just one day after their mother, 38, set up an account on gofundme, appealing for support for her family. On the page, she explained she had been left injured and financially drained by a recent car crash and needed to find a new place to live within two weeks. Grief-stricken: The boys' mother Helen Campochiaro is pictured with Kevin (center) and Brady (right). The single mother to four boys was at one of her two jobs at the time of the shootings . Remembered: Flowers and pictures of the boys were displayed inside St. James the Apostle Catholic Church . 'The mother's going through an absolute living hell right now,' Pasco County Sheriff Chris Nocco said the day after the boys died. Authorities said they have found no evidence that child welfare officials or police had ever been called to the home before the shooting. Campochiaro is a hard-working woman who had two jobs so she could take care of her boys and after the car crash, she didn't even go to the hospital because she had to work, Nocco said. On her Facebook page she says that she makes themed cakes and is a seamstress. Helen's sister, Barbara Campochiaro, of Spring Hill, told The Tampa Bay Times the children 'were raised with gun safety' and that Helen owned a firearm, though she was not sure what kind. 'She was a single mom with four boys. Unfortunately, she could only afford to live in a trailer,' Campochiaro said. 'She just had it (a gun) for protection.' Victims: Six-year-old Brady (left) was killed in the shooting, while Trevor, 16 (right), was shot in the leg . The boys' father, Luis Pimentel, said he didn't know his ex-wife, from whom he separated in 2012, kept a weapon in the home. In an interview with Fox13, he said that he had noticed Kevin was becoming withdrawn and no longer wanted to take part in family activities. He said he saw him getting angry at Brady over small things. 'I didn't get into it with Kevin,' he said. 'I didn't want to have any confrontation with him. I let him do what he wanted to do. I should have maybe disciplined him a little more.' He said the boys would spend half of their time with him and he always looked forward to their visits. 'I miss them very much,' he said. 'I love them. I will never forget them. They were my life.' Kevin was in middle school. Brady attended elementary school and Trevor took virtual high school classes at home in the mornings and culinary classes at a technical school in the afternoons. Anger: The boys' father, Luis Pimentel, said he had noticed Kevin getting angrier and more withdrawn . Scene: The shooting unfolded in the family's mobile home at the Sugar Lane park mobile home in Hudson . 'Me and my boys have had to start over from uncontrolled circumstances,too many times,' she wrote on the gofundme page. 'Divorce,theft, abuse ... I have sold almost everything I own to make a better life for my boys,more than once.' Campichiaro also alluded to having to leave her children at home while she worked. 'I regretfully feel like I never see my boys,' she wrote. 'They are so good and so understanding.They do more than their share at home and for me.Least I can do is put them in a good home.I believe in paying it forward and try to do my part everyday.' The page has raised nearly $7,000. Friends of Campachiaro have set up a separate fundraiser for her on Give Forward, which has already received more than $13,000 in donations. 'She is a devoted mom, an extremely hard worker, and an incredible business woman,' the page says of Campachiaro. 'Please help raise money for her family, for her son in the hospital recovering, and many, many expenses. Two of her sons were killed while she was at work, anything helps.' Appeal: Helen Campichiaro set up this Go Fund Me page asking for financial help the day before the shooting .
target: Kevin Pimentel, 12, shot his brother Brady Pimentel, 6, dead on Wednesday March 25 at their mobile home in Hudson, Florida .
  He also wounded 16-year-old brother Trevor Pimentel in the leg before killing himself .
  Trevor attended the boys' funeral in a wheelchair on Wednesday .
  Kevin and Trevor had been cooking about 6pm but officials said they had not been arguing before the shootings .
  Their mother, Helen Campochiaro, 38, was working one of her two jobs .
  Relatives say she was a single mom who kept a gun for protection and that the boys had been brought up with gun safety .
  On a gofundme page set up one day before the shooting, Campochiaro asked for help in raising a deposit for a new home .