Anti-Muslim graffiti has been found daubed on seven London buildings this month, including mosques, community centres and a primary school.
The Metropolitan Police said it is investigating “several incidents of criminal damage” and is treating them as “shocking” hate crimes.
The first incident took place on Monday 6 January, with the most recent recorded on Saturday 25 January. The force is looking into whether they are linked, including examining CCTV footage.
The incidents are reported to have been fuelled by a Telegram hate group, which was offering £100 to people who committed acts of vandalism. The Met said its inquiries are continuing.
The force has stepped up reassurance patrols in the affected areas and is in contact with local faith leaders.
Here are the sites that were targeted and when:
• West Norwood Mosque, SE27, on Monday 6 January
• South Norwood Islamic Community Centre, Croydon, SE25, on Monday 6 January
• Thornton Heath Islamic Centre, CR7, on Thursday 16 January
• Stratford mosque, Newham, E15, on Thursday 23 January
• Leyton Jamia Masjid, E10, on Thursday 23 January
• Albirr Foundation mosque, E10, on Thursday 23 January
• Noor Ul Islam Primary School, E10, on Saturday 25 January
Worshippers at the Stratford mosque and Leyton Jamia Masjid contacted Sky News saying their buildings had been vandalised with anti-Islamic graffiti.
The Met’s Deputy Assistant Commissioner Jon Savell said: “We understand that Muslim communities will be feeling particularly concerned for their safety following this series of shocking hate crimes.
“Hate has no place on our streets, and tackling it is at the centre of our efforts to make Londoners from all backgrounds and communities feel safe.
“Our local officers will continue to work with community leaders and ensure that a thorough investigation is being conducted”.
‘This is not an act of faith – it’s an act of cowardice’
A statement from Stratford Islamic Association to Sky News said: “Our mosque has been part of this community since 1993, and in all that time, we’ve only known kindness and respect from our neighbours.
“We are proud to be an integral part of this community, and today, we’ve been deeply moved by the overwhelming support from people of all backgrounds.”
It added: “The council and the police have stood with us, and we are truly grateful for their swift and compassionate response.
“Those responsible for this act of hate have shamed only themselves. This is not an act of faith – it’s an act of cowardice. But they will not intimidate us. We will not live in fear. Together, as a united community, we will stand strong.”
Police are urging anyone with information about the incidents to contact them on 101.
Sir Keir Starmer and Donald Trump “stressed the importance of the close and warm ties” between their countries and “agreed to meet soon” in a phone call, Downing Street has said.
During the conversation on Sunday, the prime minister congratulated the president on his inauguration and paid tribute to his “role in securing the landmark ceasefire and hostages deal in Gaza“, according to a Number 10 spokesperson.
The two leaders “discussed the importance of working together for security in the Middle East” as well as “trade and the economy”.
Sir Keir told the US leader how he plans to deregulate the UK economy to boost growth, and the president spoke of his “respect and affection for the Royal Family“.
Mr Trump also gave his condolences to Sir Keir over the loss of his brother, who died on Boxing Day.
He and the prime minister “get along well” despite Sir Keir being “liberal, which is a little bit different from me”, he told reporters travelling with him on Air Force One.
“He’s represented his country in terms of his philosophy. I may not agree with his philosophy but I have a very good relationship with him.”
Sir Keir previously met Mr Trump for dinner at Trump Tower in New York in September, before he was elected president for a second time.
He held two pre-inauguration calls with the new US president.
Mr Trump said his first international trip could be to the UK or Saudi Arabia – the first country he travelled to as president during his first term.
He said “traditionally” it could be the UK – but last time he travelled to Saudi Arabia because it agreed to buy billions of dollars of US merchandise.
“If that offer were right, I’d do that again,” he said.
Chief Inspector John Picton, of the Stockport district, said: “This incident is truly shocking, and shows how quickly situations our frontline officers attend can escalate. There is absolutely no explanation as to why this incident needed to end the way it did.
“Our officers go to work every day to provide an outstanding service to the communities they serve, and achieve fantastic results in situations that are often challenging.
“Assaults on our officers are completely unacceptable and won’t be tolerated. In this case, the officer suffered serious injuries.”
Mr Picton also said the police investigation was continuing and the officer was being “supported by all of us at the Stockport district”.
Detective Inspector Rob Smith added: “We continue to support Claire’s family at what is an extremely awful time for them. I would ask for their privacy to be respected and to allow them the space to grieve.”
He urged the public to share any relevant information with police.