In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.

Philadelphia police are investigating the "suspicious" death of the father of former National Security Adviser H.R. McMaster's father. Officials say Herbert McMaster died last week at the Cathedral Village home in Roxborough. Sources say he fell but was not treated or monitored. 
  
 Philadelphia police are investigating the “suspicious” death of the father of former Trump administration national security adviser H.R. McMaster. 
  
 Herbert McMaster died Friday at the Cathedral Village home on the 600 block of Cathedral Road in the Roxborough section of Philadelphia. He was 84. 
  
 Law enforcement sources told NBC10 McMaster's death is being investigated as suspicious due to allegations of neglect and dereliction of duty. 
  
 According to the sources, McMaster fell and hit his head and was placed in a recliner but was not treated or monitored. He later died from blunt impact to the head and his death was ruled accidental by the medical examiner. 
  
 McMaster to Resign From Trump Administration 
  
 President Donald Trump’s national security adviser H.R. McMaster will resign and be replaced by John Bolton, a former U.S. ambassador to the United Nations. Trump made the staffing announcement in a tweet on March 22. (Published Thursday, March 22, 2018) 
  
 Investigators are looking into whether workers at the home falsified paperwork and gave the McMaster family misleading information, according to sources. 
  
 Philadelphia police, the attorney general's office, district attorney's office and the Health Department are all investigating. 
  
  
  
 In a statement released Thursday, Cathedral Village said the safety and well-being of their residents are "top priority." 
  
 "After immediately notifying the family and appropriate authorities of the resident’s death, we began our own internal investigation, which is ongoing," the statement read in part. 
  
  ||||| PHILADELPHIA (CBS) – Authorities in Philadelphia are investigating the death of the father of President Donald Trump’s former national security adviser, sources tell CBS3. 
  
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 According to the Philadelphia Department of Health, H.R. McMaster Sr., the father of Gen. H.R. McMaster, died on April 13 at the Cathedral Village Retirement Community located in the 600 block of East Cathedral Road. 
  
 The health department confirms he died of blunt impact trauma to the head and the manner of death was determined to be an accident. 
  
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 But sources tell CBS3 that Philadelphia police and the Pennsylvania Attorney General’s Office are investigating the possibility of institutional neglect after he fell. 
  
 “We are working closely with the Philadelphia Police Department to thoroughly and carefully review this tragic incident. This investigation is in the very early stages,” says the attorney general’s office in a statement. 
  
 Sources could not provide further details at this time. 
  
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 CBS3 interviewed H.R. McMaster Sr. in 2017 when his son became the national security adviser. 
  
 “I’m very proud of him and he has never disappointed anyone who knows him or who he’s ever served with,” McMaster Sr. said. 
  
 Gen. McMaster served under Trump as the 26th National Security Advisor. In April, he resigned from his role and was replaced by former U.S. Ambassador John Bolton. 
  
 Cathedral Village has not responded to requests for comment. ||||| EMBED More News Videos Police investigate father of former Trump advisor's death: Sarah Bloomquist reports on Action News at 6 p.m., April 18, 2018 
  
 According to sources, the Philadelphia Police Department Homicide Unit, the Philadelphia District Attorney's Office, the Pennsylvania Attorney General's Office and the Department of Health are all investigating the death of former National Security Advisor General H.R. McMaster's father, 84-year-old H.R. McMaster, Sr.It is being investigated as a suspicious death.On Thursday, the medical examiner determined the cause of death to be blunt impact head trauma.The manner of death is accidental. However, the medical examiner, says the manner does not mean an act of negligence could have led to it.H.R. McMaster served as President Trump's national security advisor from February 2017 until earlier this month.The elder McMaster died on April 13 at Cathedral Village in the 600 block of E. Cathedral Rd in Roxborough, a senior living Continuing Care Retirement Community.He was receiving care at Cathedral Village after suffering a stroke.The allegations are that McMaster Sr. fell, hit his head, was put in a chair and then died. He allegedly did not receive proper care.Investigators are probing information from some staff members who informed the McMaster family that records were falsified pertaining to this death.Philadelphia police executed a search warrant at the facility Tuesday.Cathedral Village spoke with 6abc Wednesday evening and stated that they are fully cooperating with the agencies investigating the death of H.R. McMaster, Sr.Village officials say they contacted the Department of Health the same day of his death and launched an internal investigation into the allegations being made.A spokesperson said, "We remain committed to the safety and welfare of all our residents and have made every effort to cooperate."A spokesperson for the Pennsylvania Attorney General's Office said, "We are working closely with the Philadelphia Police Department to thoroughly and carefully review this tragic incident. This investigation is in the very early stages."The McMaster family issued the following statement:------ |||||
The father of former National Security Adviser HR McMaster died April 13, and sources tell 6ABC the death has been labeled as suspicious. HR McMaster Sr., 84, died at Cathedral Village, a senior living facility in Philadelphia's Roxborough neighborhood where he'd been receiving care after having a stroke. He reportedly fell and hit his head and was placed in a recliner, but he didn't receive treatment or monitoring, per NBC10's sources; he later died. His cause of death was found to be blunt impact trauma to the head, and the death was ruled an accident. Sources say some staff members told the family records about the death were falsified and that the family had been given misleading information. CBS3 reports that authorities are investigating the possibility of institutional neglect. The Philadelphia Police Department Homicide Unit, the Philadelphia District Attorney's Office, the Pennsylvania Attorney General's Office, and the Department of Health are all said to be investigating. Cathedral Village says it's cooperating with the investigation and completing its own internal investigation.