The identity of the person who placed a bomb outside a window of the Transport Malta offices two years ago may well remain a mystery after a magisterial inquiry turned out to be inconclusive, The Times has learnt.

The inquiry is in the process of being closed but does not unearth any strong leads on the identity of the perpetrator, sources close to the investigation said.

The bomb was lowered from a wooded area known as the Pinetum, directly behind the Transport Malta offices in Pietà, and injured two people when it exploded.

The head of land transport, Konrad Pulè, was believed to be the target as he received a Christmas card three weeks after the December 2, 2010 incident saying “I will not forget you”. Inserted in the card was a piece of rope burnt at one end.

Mr Pulè was only slightly hurt but a colleague, Major Peter Ripard, who happened to be in Mr Pulè’s office on the second floor at the time, lost his leg in the blast.

Straight after the explosion, forensics experts scoured the Pinetum for clues and the police recovered CCTV footage from nearby establishments. At the time it was reported that the outdoor cameras attached to the offices may have been turned inward.

A magisterial inquiry was opened and an exhaustive investigation was carried out by the police but no conclusions have yet been drawn.