The killings attributed to Romanov ran from 1991 to 2006 in the Kaliningrad region of Russia. The victims were girls and young women, stabbed or struck with a hammer. He was arrested in 2006, in his mid-fifties. Russian reporting called him the taxi driver, which is how he approached the women he killed.
On October 11, 2006 he hanged himself with a bed sheet in a detention centre. There was no trial, no testimony and no judgment. The figure of eleven or more is the one investigators gave when his death was announced, and the cases were closed administratively rather than proved.
The accessible source is a single RIA Novosti dispatch of October 12, 2006. Nothing further about the investigation, the victims or the evidence has been published in a form that can be checked. The name is spelled Vladmir here because that is the spelling on the live page; Russian reports give Vladimir.