Hong Kong, Sep 25 (DPA) A Hong Kong teenager has admitted to making a bomb which exploded and injured a friend, using instructions on the internet, a court report said Friday.

The 14-year-old claimed he made an explosive favoured by Islamic terrorists for fun after learning how to do so online.

However, the bomb exploded when he gave it to a classmate who lit the fuse March 27. The friend sustained injuries to his face, an eye and two fingers.

The teenager appeared in court Thursday, pleading guilty to making an explosive substance.

A report in the South China Morning Post Friday said the court heard how the bomb was made of two plastic bottles filled with white powder known as triacetone triperoxide (TATP).