Umno is unfazed about defectors from their party joining the newly formed Parti Pribumi Bersatu Malaysia (Bersatu), said Umno secretary-general Tengku Adnan Tengku Mansor.

"We're not worried. Ezam Mohd Nor (joining Bersatu), we're not worried," he told reporters during a pitstop for the Putrajaya Community Ride at his house in Putrajaya today.