Forensic tests are being carried out on a threatening Christmas card sent to the head of land transport who survived a bomb attack at his Transport Malta office earlier this month.

Investigators are hoping that the tests, which include testing for fingerprints, might shed light on the December 2 bombing at Transport Malta’s Sa Maison offices in which a man was maimed, sources said.

So far police still do not have any leads on who may have planted that bomb.

Investigators are examining the recent cases handled by Konrad Pulè, the chief officer of land transport within the authority, to try and determine a possible motive given that the bomb is believed to have been aimed at him.

Mr Pulè himself does not have any possible suspects in mind, sources said.

Rumours that the bomb may have been planted by someone who works in the field of public transport – which is undergoing a reform – remain unfounded.

On December 2, a bomb was lowered in front of Mr Pulé’s office window, the only one located at the back of the authority’s premises on the side of the Sa Maison pine grove.

He escaped unhurt but his colleague, traffic expert Major Peter Ripard, 74, lost a leg and is still recovering.

Then, last Wednesday, the 32-year-old received a Christmas card at home with the words “I will not forget you” and in which a length of rope burnt at one end was enclosed.