Vandals defaced two war memorials in London, covering over revered descriptions and allegedly posting the word “Islam” on at least one of the monuments. These attacks were waged against the London-based Royal Air Force Bomber Command War Memorial and the Animals in War Memorial — two of the country’s most important  remembrances.

The messages were discovered Monday morning and have since been covered up with plastic sheets, the Telegraph reports. So far, the motivation for the attack is unclear and no arrests have been made.

Vandals Deface Revered British War Memorials, Allegedly Write Islam in Red Paint

A man looks at the Animals in War memorial in Park Lane part of which has been vandalised on May 27, 2013 in London, England. Local media are reporting that the word ‘Islam’ was painted on the war memorials in the early hours of the morning. Credit: Getty Images

“At 5am this morning police discovered graffiti on both the RAF Bomber Command War Memorial in Green Park and the Animals in War Memorial on Park Lane,” a spokesman for Scotland Yard said earlier today. “Royal Parks’ officers and Westminster police are investigating.”

The Telegraph notes that tensions have been running strong since the violent Islamist machete attack last week that left Drummer Lee Rigby dead.

Vandals Deface Revered British War Memorials, Allegedly Write Islam in Red Paint

Red paint is seen scrawled on part of the Animals in War Memorial in Park Lane on May 27, 2013 in London, England. Local media are reporting that the word ‘Islam’ was painted on the war memorials in the early hours of the morning. Credit: Getty Images

The memorials are relatively close to one another. The Bomber Command Memorial honors the lives of the 55,573 Royal Air Force crew members who died during World War II; it was dedicated last year by the Queen. The Animals in War Memorial, instead, honors the animals that died in battle during the 20th century.

(H/T: Telegraph)