LONDON, Dec. 17 (Xinhua) -- John Worboys, known as black cab rapist in the UK, was sentenced to life in prison on Tuesday after being found guilty of attacking four more victims.
The 62-year-old was described in court as being "as dangerous as ever." He is already in jail for attacking 12 women.
Prosecutor Duncan Penny QC told the Old Bailey court that psychiatrist Philip Joseph found Worboys had been "fantasizing" about attacking women since 1986.
After the four women came forward, Worboys admitted two charges of administering a drug with intent to commit rape or indecent assault.
A probation report in August this year stated that "he is potentially just as dangerous now as the point of the first sentence."
In 2009, Worboys was locked up indefinitely for public protection with a minimum of eight years after being found guilty of 19 sex offences against 12 women between 2006 and 2008.