A 37-year-old man has been arrested by police investigating the murder of an 80-year-old grandmother found at an allotment.
Mubarick Duat is being questioned on suspicion of murder following an appeal for information about Lea Adri-Soejoko's death.
Ms Adri-Soejoko, who was strangled with a ligature, was discovered in Colindale, north-west London, in a lock-up store at the allotment where she was secretary on February 28.
A 40-year-old man was charged with the murder of Ms Adri-Soejoko, also known by her maiden name of Lea Hulselmans, on March 5.
Police said they remain eager to speak to people who may have information about what happened.
Detective Chief Inspector Noel McHugh, said: "I am still keen to speak with those who were in and around the area at the time of the incident. It is important that we continue to build a timeline of the events that led to officers discovering Lea's body in the lock-up store.
"I would also like to hear from any previous owners who may be able to provide us with information about the people who currently tend to or own an allotment.
"I would encourage anyone who visited the area on Monday 27 February and has not spoken with police to phone us.
"Any piece of information, however small, will help my team build a picture of events that tragic day."
Ms Adri-Soejoko's family said: "What is keeping us going is the hope that we will find out the truth about the callous death of our kind and loving mum.
"We need your help, the public, to support us now by assisting the investigation and helping to shed light on mum's final hours."