Twitter fired more workers in a fresh wave of cuts meant to curb costs at the social networking company now owned by Elon Musk.

Some laid-off employees, mostly from engineering and product, learned they were removed via an email late Saturday, Bloomberg said.

Others were handed out their termination details over Twitter when they could no longer log into the internal system.

The exact number of impacted staff was not known, but it is believed it could be in the dozens. According to the information previously reported, more than 50 people were let go. Twitter has yet to confirm the number of terminated employees. 

Several startup founders who joined Twitter via acquisitions over the past few years tweeted on Sunday that they’d also been cut, including a founder of the newsletter startup Revue and the design firm Ueno. Previously, Twitter had tried to avoid cutting founders to avoid having to expedite the vesting of larger stock grants, the report said.

Soon after taking over Twitter, Elon Musk last year eliminated about 3,700 jobs at the company, or half of its workforce, in what he termed a measure to drive down costs following his US$44 billion acquisition.