WASHINGTON - The White House is expected as soon as Wednesday to announce around $1 billion worth of new weapons aid for Ukraine, including anti-ship rocket systems, artillery rockets, and rounds for howitzers, people familiar with the packages said.

The aid packages, which come as U.S. Defense Secretary Lloyd Austin is meeting with allies in Brussels, could be split into two categories: transfer of excess defense articles from U.S. stocks and other weapons being funded by the Ukraine Security Assistance Initiative, a separate congressionally authorized program.

The weaponry will include more rockets for Multiple Rocket Launch Systems (MLRS) that had been sent to Ukraine and artillery rounds for M777 howitzers and spare parts. Ground-based Harpoon anti-ship missile launcher capabilities, secure radios, night vision and training are also expected.

The White House declined to comment.

(Reporting by Mike Stone, Patricia Zengerle, Humeyra Pamuk and Steve Holland in Washington; editing by Jonathan Oatis)