Bangalore: A woman serial killer, who poisoned six women to death across the city till her arrest in 2007, has been sentenced to death in a murder case.

The First Additional Rural Court sentenced Mallika to death yesterday for murdering a woman on December 18, 2007.

This is her second conviction in the last three years.

She had allegedly poisoned six women with cyanide, bought from a gold polishing shop, over a eight year period till she was arrested in 2007.

Mallika had deserted her family a decade ago.