Video has emerged from an Islamic center in Philadelphia showing children singing songs and reading poems saying they would sacrifice themselves and kill for Allah.

According to Middle East Media Research Institute (MEMRI), the video was uploaded on April 22nd to the Facebook page of the Muslim American Society Islamic Center in Philadelphia.

In the video, children are seeing singing: “Glorious steeds call us and lead us [to] the Al-Aqsa Mosque. The blood of martyrs protects us… Take us, oh ships… until we reach our shores and crush the treacherous ones… Flow, oh rivers of martyrs!”

A young girl reads: We will defend [Palestine] with our bodies… We will chop off their heads, and we will liberate the sorrowful and exalted Al-Aqsa Mosque… We will subject them to eternal torture.”

The Muslim American Society (MAS) operates 42 chapters in the United States. According to its website, the MAS’ mission is to “move people to strive for God-consciousness, liberty and justice, and to convey Islam with utmost clarity,” and that its vision is “a virtuous and just American society.”

The MAS released a statement on the video, via Facebook late Friday:

The Muslim American Society – Philadelphia Center rejects a statement made at an event held in April at a local community center in Philadelphia. The center celebrated “Ummah Day” where children sang songs from their cultural traditions. While we celebrate the coming together of different cultures and languages, not all songs were properly vetted. This was an unintended mistake and an oversight in which the center and the students are remorseful. MAS-Philadelphia Center will conduct an internal investigation to ensure this does not occur again.

As a faith-based organization dedicated to moving people to strive for God-consciousness and a just and virtuous society, we affirm our long-standing position on our shared values of humanity. We stand resolutely in our condemnation of hate, bigotry, Islamophobia, xenophobia, racism, antisemitism and all the illnesses of hate that plague our society.