Kerr was named by RUC
Special Patrol Group (SPG) officer
John Weir as having been one of the two gunmen who shot Catholic chemist William Strathearn to death at his home in
Ahoghill,
County Antrim on 19 April 1977. Strathearn, who lived above his chemist shop, was shot dead at 2.00 am by a loyalist hit squad. They gunned him down when he opened the front door after the men used a ruse of needing medicine for a sick child. Weir and fellow SPG officer
Billy McCaughey were later convicted of the killing, although they maintained that they had waited in Weir's car throughout the entire operation. Although Weir and McCaughey named Kerr and Jackson as the gunmen, the two men were never questioned about the attack, and an RUC officer stated that neither Kerr nor Jackson were brought before the court for "reasons of operational strategy". The Derry-based human rights group, the
Pat Finucane Centre, asked Professor Douglass Cassel (formerly of the
Northwestern University School of Law in
Chicago) to convene an international panel of inquiry to investigate collusion by members of the security forces and loyalist paramilitaries in sectarian killings in Northern Ireland. This panel, in their 2006 report, named Kerr as one of the members of the notorious
Glenanne gang, of which Robin Jackson was a key figure. The gang was a loose alliance of loyalist extremists who carried out a series of sectarian attacks and killings against Catholics/nationalists in the South Armagh area in the 1970s. The gang comprised loyalist paramilitaries and rogue members of the security forces, including the RUC and
Ulster Defence Regiment (UDR). It was allegedly directed by
British Military Intelligence and/or the
RUC Special Branch. The same report also described Kerr as a local UDA commander. John Weir stated in his affidavit, which was published in a judiciary inquiry commissioned by Irish Supreme Court Justice
Henry Barron into the
Dublin and Monaghan Bombings, that he had first met Kerr in the company of Robin Jackson in 1974. Weir had gone to a pub in Moira, County Armagh with a girlfriend and there had been introduced to Kerr and Jackson. Jackson was implicated by Weir as one of the leaders of the two UVF gangs that exploded three car bombs in Dublin's city centre on 17 May 1974, leaving 26 people dead. Kerr was not implicated, however. Weir made his affidavit in 1999 when both Kerr and Jackson were already dead. The 2003 Barron Report notes that
Lord Chief Justice of Northern Ireland Robert Lowry was aware of Kerr and Jackson's involvement in the Strathearn killing, and that they were not prosecuted for "operational reasons". Mr. Justice Barron was highly critical of the RUC's failure to properly investigate Kerr and Jackson. ==Subsequent activity==