A Muslim campaign to raise money to repair a vandalised Jewish cemetery has seen donations triple overnight after JK Rowling supported the initiative online.

The crowd funding drive aimed to raise £16,000 ($20,000) for repairs to the St. Louis-area Chesed Shel Emeth Cemetery, where at least 170 gravestones were toppled by vandals last weekend.

On Tuesday night, within hours of the Harry Potter author retweeting a Jewish News story on the campaign to her 10 million followers, the amount raised almost trebled from £18,000 to £45,000.

The popular author wrote alongside the web link: “This is such a beautiful thing. The tweet received around 10,000 retweets and more than 30,000 likes.

The unexpected increase in traffic crashed the campaign site’s page.

A screenshot of the fundraising campaign at $57,000

The two Muslim activists who launched the drive, Palestinian-American Linda Sarsour and Tarek El-Messidi, say any remaining funds after the cemetery is restored will go toward restoring other vandalised Jewish sites.

Sarsour and El-Messidi wrote that they hoped “to send a united message from the Jewish and Muslim communities that there is no place for this type of hate, desecration and violence in America.”

Sarsour said: “We just want our Jewish sisters and brothers to know that no matter who, what or why – we will not sit back and we are here to uplift one another. ”