Scottsdale-based Taser maker Axon has pulled out of negotiations with the city in a dispute over a planned housing project at its headquarters.

In a statement released Monday, company president Josh Isner said Axon was withdrawing from negotiations with Scottsdale, calling the environment toxic and saying internal politics had made it impossible to proceed.

Scottsdale Mayor Lisa Borowsky said in a social media post that she appreciated Axon’s efforts to come to the table and engage in meaningful dialogue. She went on to say there were too many hurdles to overcome to move an agreement forward.