Anheuser-Busch sued InBev on Tuesday, hours after the Belgian-Brazilian brewer filed more papers that could lead to a hostile takeover attempt.

The two beer giants have been battling for weeks over InBev's $46 billion bid to acquire the St. Louis-based brewer of Budweiser. Anheuser rejected InBev's bid, saying it significantly undervalues the company. 

The saga continued on Tuesday when Anheuser filed suit in U.S. District Court in the Eastern District of Missouri, claiming the takeover bid is an "illegal plan and scheme" to acquire the company "at a bargain price." InBev's offer places a $65-a-share price tag on Anheuser. 

In the suit, Anheuser is seeking to put on hold any hostile takeover attempt until "numerous false and misleading statements" are clarified, according to Dow Jones Newswires. 

Specifically, Anheuser questioned the financing that InBev says it has already secured for the mega deal. "No group of lenders would unconditionally agree to loan InBev the $40 billion it will need" given the fragile state of the credit markets, the suit alleged, according to Dow Jones. 

Also, Anheuser said that InBev has hidden the fact it does business in Cuba, something that could have an impact on the company's takeover attempt. InBev has already faced significant political opposition from local and national lawmakers. 

Earlier in the day, InBev, which makes Beck's and Stella Artois, wrote a letter to Anheuser requesting the company set a "record date" to determine which shareholders can vote on a potential hostile takeover attempt, regulatory filings show. 

On Monday InBev filed a preliminary proposal with the Securities and Exchange Commission that would set up a vote by Anheuser shareholders to oust the current board of directors.