British police have conducted two raids in connection with Wednesday's murder on the streets of London on Wednesday.

Police conducted this morning a raid against a house in the district of Greenwich, not far from Woolwich where the murder occurred.
According to neighbors, four people running away from the site by police, reports the BBC .
The four will be two sisters in their 30s, an older woman and a teenager.
It is not known what relationship the four have arrested the two people who were arrested yesterday for the murder of the soldier.

from Nigeria

So far, not the identity of the two who is arrested for the brutal murder known.

Several British media writes Thursday that the two perpetrators have Nigerian background. One of them should have been born in Britain, the other in Nigeria, writes The Guardian.

Also, Reuters reported the same, with reference to a source with knowledge of the investigation.

The two are now under armed police guard at a London hospital after being shot by police when they were arrested Wednesday.
Raids in Lincolnshire

British police confirm that they have carried out a raid on a house in Lincolnshire in connection with the murder.
According to the Daily Mail is the house of the father of one of the detainees who were ransacked.

It is not known someone is arrested after raid.

Enhances security by military barracks
- It happened yesterday in Woolwich has shocked us all. It was an attempt divide us, but it will only help unite us, said British Prime Minister David Cameron on Thursday morning.

He said that security has been increased at a military barracks in London.
While the prime minister was careful to say that the murder had nothing to do with Islam.

- This was not just an attack on Britain and the British way of life, but also a betrayal of Islam and the Islamic groups who give so much to our country. There is nothing in Islam that justify this horrendous attack, said David Cameron.