A man, believed to be in his late 20s, has been stabbed to death during a night of violence in London.

Police were called to the junction of Ron Leighton Way and Wakefield Street in Newham, east London, at 11.07pm on Saturday where they found the man with stab wounds.

The victim was pronounced dead at the scene. His next of kin have been informed.

A post-mortem will be held, and police have launched a murder investigation.

Earlier in the evening, at 5.55pm, officers were called to reports of a fight in Coldharbour Lane in Brixton and found a 54-year-old man injured.

He was taken to hospital in south London but pronounced dead at 10.10pm. His next of kin have been informed. Two arrests have been made.

Image: Met Taskforce shared this picture of a knife in Woodberry Down

Image: Hackney Police dealt with one stabbing in Woodberry Down

In another incident, a man and a woman were stabbed near Manor House in Hackney and were taken to an east London hospital.

Their condition is not known.

The Met Police said officers were called to reports of a man brandishing a knife at about 11.30pm.

They were pelted with bottles and missiles as they arrived at the scene, and had to call for additional help from the National Police Air Service and specialist officers.

Police tweeted they were "dealing with spontaneous outbursts of disorder" on the Woodberry Down Estate.

The Met Taskforce tweeted: "Another long shift for U4:3 dealing with disorder & a stabbing in the Woodberry Down in @MPSHackney.

"Officers gave life saving treatment to the victim recovered a weapon & were attacked with numerous missiles on entering the estate."

Image: Police were called to spontaneous disorder in Woodberry Down

Image: City Police and Met Police dealt with disorder in Woodberry Down Estate

The attacks came on the same day a woman who was around eight months pregnant was stabbed to death in a separate incident, with her baby delivered at the scene.

The incidents come amid a series of knife attacks in the capital, with teenager Yusuf Mohamed stabbed to death while trying take cover in a Shepherd's Bush convenience store on Wednesday evening.