MANILA, Philippines — Malacañang called on law enforcement agencies to act on reports about an alleged plan by Vice President Sara Duterte’s supporters to attack Malacañang on June 12.Palace Press Officer Claire Castro issued the statement after columnist Ramon Tulfo claimed on social media that intelligence reports discussed during a meeting in Camp Crame allegedly involved a plan by pro-Duterte groups to "storm Malacañang" on Independence Day.…