In the aftermath of the Paris terrorist attacks on Friday, a number of mosques throughout the U.S. have found themselves the subject of threats and vandalism.

KEYE TV reports the Pflugerville Police Department is investigating a case of vandalism at the Islamic Center of Pflugerville on Windermere Drive, in Austin, Texas, on Monday. According to a local member of the mosque, a torn Quran was found outside the front entrance of the center, covered with feces. Authorities said no physical damage was done to the facility, although clean-up costs were estimated at around $150.

Members of the Austin suburb came to help in cleaning and showing support.

"They are brothers and sisters in humanity and that is first and foremost," said a Christian woman bringing a gift of flowers.

Muslims who were other areas of the city also arrived.

"We wanted to express our support and say we are hear for you as your Muslim brothers and sisters," said one woman.

The incident may be motivated by the Islamic State attacks in Paris that left at least 129 people dead. Center board member Faisal Naeem was shocked that such a crime could happen in Pflugerville.

"A few individuals who did what they did, they don't represent 1.6 billion Muslims," said Naeem. "They don't represent me for sure and the Austin Muslim community."

Police are treating the incident as a hate crime.

Meanwhile in Florida, two mosques received phone threats of violence last Friday.

USA Today reports a caller left threatening phone messages at the Islamic Society of Pinellas County and the Islamic Society of St. Petersburg in Pinellas, Florida. The FBI investigated the incident, tracing both calls to one individual. Authorities confirmed there was no intention to act on the threats, but the Muslim community was still unnerved.

"I don't know what it takes for the FBI to consider a threat against American Muslims legitimate more than a person saying he wants to firebomb Muslim community centers," said Hassan Shibly of the Council on American-Islamic Relations in Florida.