Russian investigators have identified the killer of human rights activist Natalia Estemirova, President Dmitry Medvedev has said.

BBC: Killer of Natalia Estemirova 'on wanted list'

Our friend had a brief and passing acquaintance with this man, who was later to be identified as the serial killer known as "The Cobra".

BBC: Campaigning journalist Paul Foot has died aged 66.

Fincher, working with a fantastically detailed script by the young James Vanderbilt, chronicles the case of the self-identified Zodiac killer, a taunting, publicity-mad creep who murdered at least five people in the San Francisco Bay Area in the late sixties and sent confessional notes about the crimes (sometimes in cipher) to newspapers.

NEWYORKER: Zodiac

"It's wrong to say that there is no investigation, the perpetrator of this murder, the killer, has been uncovered and definitely identified, " Mr Medvedev said.

BBC: Killer of Natalia Estemirova 'on wanted list'