9/11 police have cancer

Researchers say a small number of young police officers who took part in the World Trade Centre rescue and clean-up operation after the September 11 2001 terror attacks have developed an immune system cancer.

The numbers are tiny, and experts do not know whether there is any link between the multiple myeloma cases and toxins released during the disaster.

But doctors who co-ordinated the study, published in the Journal of Occupational and Environmental Medicine, said people who worked at the site should continue to have their health monitored.