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NEW: Muslim Council of Britain calls for more security for migrants, as more racist incidents reported

Social media details dozens of unconfirmed incidents of racial abuse across the UK

CNN  — 

Racial abuse is on the rise in post-Brexit Britain, a Conservative British MP said as police confirmed they were investigating several racially motivated crimes.

Anti-immigrant leaflets saying “Leave the EU - no more Polish vermin” were put on cars near a school, local police said, the day after the country voted to leave the European Union.

On Sunday, the Polish Social and Cultural Association in Hammersmith, west London, was allegedly vandalized with a racist slogan.

Baroness Sayeeda Warsi

Conservative politician and lawyer Baroness Sayeeda Warsi, who quit the “Leave” campaign shortly before the vote, told Sky News that organizations working with race crime victims had seen a rise in reports of abuse since the Brexit vote.

“I’ve spent most of the weekend talking to organizations, individuals and activists who work in the area of race hate crime, who monitor hate crime and they have shown some really disturbing early results from people being stopped in the street and saying look, we voted Leave, it’s time for you to leave,” she said.

“They’re saying this to individuals and families who have been here for three, four, five generations. The atmosphere on the street is not good.”

Warsi had previously accused the “Leave” campaign of peddling “lies, xenophobia and the politics of hate” following her decision to quit before the vote.

On Monday, the Muslim Council of Britain released a gallery of “100 hate incidents” it had taken from social media and called on the Home Secretary to step up security for migrants.

“We are witnessing the shocking extent of this with reports around the country of hate speech and minorities being targeted,” Muslim Council of Britain Secretary General Dr Shuja Shafi said.

“We need leadership now more than ever before. Our country is experiencing a political crisis which, I fear, threatens social peace.”

Police investigate hate crimes

Cards abusing Polish migrants in both English and Polish were left on cars and at properties around Huntingdon in Cambridgeshire, local police said.

Resident Kathleen Gaynor said she had found one on her mother’s doorstep, held down with a stone.