London, March 4: Singer Louis Tomlinson has reportedly tightened security at his house following death threats from stalkers to girlfriend Eleanor Calder.
Tomlinson, 21, a member of band One Direction, has splashed 15,000 pounds to build a special panic room, which he can use to hide from intruders in case of emergency, reports thesun.co.uk.
"Louis loves the fans and isn't overwhelmed with paranoia. He's just a realist about the dangers of being in the spotlight," said a source.
"One Direction followers are notorious for tracking the lads down, so that's made him a bit cautious," the source added.