According to the City of Burnsville at https://www.burnsvillemn.gov/2376/Community-Updates there is one approved charitable donation site for the LODD Police Officers and Firefighters. The text reads:

Supporting the Families of Our Fallen Heroes

The outpouring support and contributions for the families of Officer Paul Elmstrand, Officer Matthew Ruge and Firefighter/ Paramedic Adam Finseth is deeply appreciated. If you would like to offer support to the families of our fallen heroes in the coming days, please direct monetary contributions to Law Enforcement Labor Services. This site is coordinated by Law Enforcement Labor Services and contributions will be delivered directly to the families.

This is the only contribution site we have verified on behalf of the families. Please be aware of scam fundraisers seeking to exploit this tragedy.

For those who would like to make a non-monetary contribution as a show of support, you may bring contributions to Prince of Peace Church, 13801 Fairview Dr. Burnsville, MN 55337. More information is available at Prince of Peace’s Mission Outpost donation center.