Former D.C. Councilman Kenyan McDuffie, who’s running for mayor of Washington, D.C., accused the rideshare app Empower of intimidating him on Friday because he supported shutting down its operations in the federal district as a lawmaker last year.

The dispute stems from regulatory issues facing Empower in D.C. and the broader metropolitan area, including Virginia and Maryland. The company is based in McLean, Virginia.