Donald Trump Jr. paused from his duty of defending his dad’s agenda over Twitter on Wednesday to provide his insight into the London attacks outside of the British Parliament building that left a police officer and four others dead.

Remarks

The US president’s eldest child aimed at London’s mayor Sadiq Khan, by referencing a year-old article by the news outlet The Independent, a London-based newspaper, in which he says that preparedness must be a big part of any big city’s fabric. The message gathered a new meaning on Wednesday after the attacker drove a car through innocent pedestrians on London’s Westminster Bridge, then fatally stabbing a police officer at Parliament’s gates.

“London mayor says terror attacks ‘part and parcel’ of living in a major city,” the newspaper’s headline announced.

Only two short hours after the initial reports of the attack Wednesday, Trump Jr. immediately pounced.

Khan, who became the city’s first mayor of an ethnic-minority, in addition to the very first Muslim that leads the capital of any major Western nation, issues his own statement after the attacks Wednesday to offer his personal condolences towards the families of the victims, especially the fallen officer.

“I want to reassure all Londoners and all our visitors not to be alarmed — our city remains one of the safest in the world,” Khan said in his statement. “Londoners will never be cowed by terrorism.

Response

After keeping a relatively low profile since the attacks, some Twitter users joined the son of the US president to condemn the mayor. However many rushed to Khan’s defense, including parliament member Wes Streeting of the Labour Party, who directly replied to Trump Jr., calling him an absolute “disgrace.”

Other British lawmakers that were inside Westminster Abbey during the attack also came to defend the mayor, and insisted that his Muslim identity is no factor as the bustling city attempts to recover from the incident.

“There should not be a single thought about what his identity is,” Pola Uddin of the House of Lords said. “This is a moment of reflection for all Londoners, and should lead us to consider the fact that we largely haven’t experienced such attacks before, while other cities have.”