Dean Heller, R-Nev., was broken into Sunday, police said.
Police were notified after a burglary alarm went off just after 9 a.m. Sunday at the Republican senator's office at 8930 W. Sunset Road.
LVMPD would not confirm the information about the threatening note.
Home Crashes Into Roof Of North City Home
The auto apparently "came off one of the roadways at a high rate of speed and launched into the roof", according to a firefighter. Officials said the driver of the SUV drove onto the lawn of Bruce Redding, just before launching himself on the top of the home.
Further details were not immediately available.
Authorities are investigating a break-in at the office of Republican Senator Dean Heller in Nevada.
Heller has recently been the subject of pressure to support the Senate GOP's new health care bill and in the hot seat over his wavering support of the legislation.
Heller is also the only GOP senator up for re-election in 2018 in a state that Trump lost, making him one of the most vulnerable Republicans in the next election. Officers took a report for Threatening or Obscene Letters or Writing (NRS 207.180). An unnamed spokesperson for Heller told the network: "W$3 e can't comment on/discuss ongoing investigations".