Billionaire innovator Elon Musk arrived at Twitter's San Francisco office on Wednesday bringing with him what appeared to be a bathroom sink.

"Entering Twitter HQ - let that sink in!" the Tesla and SpaceX CEO tweeted with a video of his arrival.

He also updated his Twitter bio to "Chief Twit" and made plans to address Twitter employees on Friday, the deadline for his $44 billion takeover of the firm. He has until Friday at 5 p.m. ET to finalize the deal or the Delaware litigation would resume.

According to an email obtained by CNN and Bloomberg reporters, office staff had a brief heads-up about the visit.

According to the sender, Twitter Chief Marketing Officer Leslie Berland, Musk would be in the office this week "meeting with folks, walking the halls, and continuing to dive in on the important work you all do."

Employees would also hear directly from Musk on Friday, according to the email. A representative for Twitter declined to comment on the report or Musk's message.

When Musk attempted to back out of their $44 billion merger agreement, Twitter sued him, saying that Twitter had not been transparent regarding spam and bots on its network, which he said would have a material adverse effect. This has been disputed by Twitter.

After Musk said that he would in fact be willing to purchase Twitter, a judge in the Delaware Chancery Court set the Friday deadline. Twitter wants the court to continue to be involved because it did not trust Musk's word. The judge ultimately decided to postpone the trial that had been scheduled for last week and gave the parties until the end of this week to reach a settlement; otherwise, she would schedule fresh trial dates for November.

Earlier this month, Musk expressed his excitement about the Twitter situation on a call with investors regarding Tesla's financial results. He called Twitter a platform with "incredible potential" that has "languished for a long time," albeit he realized he was overpaying for it.

"Although obviously myself and other investors are overpaying for Twitter right now," Musk said, "the long-term potential for Twitter is an order of magnitude higher than its current value."

Musk's interest in acquiring Twitter seems to begin in late March. That's when Twitter said he approached members of its board, including co-founder Jack Dorsey, and told them he was buying up shares and wanted to join the board, take Twitter private, or launch a competitor.