He told me the syringe had orange liquid in it and my first thought was that it was blood

Boy's mother

The pupil told his mother the syringe had contained an orange liquid.

He underwent a hepatitis test, which proved negative.

But his family has been told that he must wait six months for an Aids test.

The HIV virus can take that long to show up in the body.

The child's parents are concerned the needle could have been used by a drug addict.

"I am petrified my son has contracted something awful," said his mother, who has not been named.

'Puncture wound'

"He told me the syringe had orange liquid in it and my first thought was that it was blood."

Health chiefs have confirmed a "puncture wound" was later found on the boy's upper arm.

The school, police, and social services are investigating.

A South Wales Police spokesman said: "I can confirm that a complaint has been made and it is being investigated jointly by ourselves and the social services."