Three men have been charged with preparatory acts of terrorism by officers investigating the attempted murder of DCI John Caldwell. The police officer was shot multiple times at a sports complex in County Tyrone on 22 February after a youth football team coaching session. His son was with him as he loaded footballs into the boot of his car when the gunmen approached. The men are aged 45, 47 and 58. The 45-year-old and 58-year-old have been further charged with possession of articles for use in terrorism, and providing property for the purposes of terrorism. They were arrested on Tuesday under the Terrorism Act in Belfast, Newtownabbey and Coalisland. All three are expected to appear at Belfast magistrates court on Wednesday. All charges will be reviewed by the Public Prosecution Service. So far there have been 31 arrests over the shooting, which includes individuals who have been arrested more than once.