This is Yahoo News’ succinct update on the criminal and civil cases against former President Donald Trump. Here are the latest developments:

🚨 What happened today

On the first day of Trump’s first criminal trial, prosecutors asked Judge Juan Merchan to fine Trump $3,000 for three social media posts attacking witnesses who will testify in the hush money case against him that they say violate a gag order put in place by the judge last month. Merchan said Monday that he will hear further arguments on the prosecution request on April 24.

📌 Tell me more

• In recent social media posts, Trump attacked his former lawyer Michael Cohen and adult-film star Stormy Daniels, both of whom are expected to testify, calling them “sleazebags.”

• Prosecutors asked Merchan to sanction Trump $3,000 for social media posts they say violated the judge’s gag order that prevents Trump from making statements about the participation of prospective witnesses.

• Trump’s lawyers argued that the former president was “responding to salacious, repeated attacks by these witnesses.”

• Merchan responded to that point by saying, “I don’t recall that there’s an exception if he’s being attacked.”

• The judge also made a series of rulings on what evidence prosecutors could present during the trial. They’ll be allowed to enter into the record a transcript of the famous “Access Hollywood” tape in which Trump boasts about being able to sexually assault women, but the video will not be shown.

• Merchan gave instructions on the trial schedule, including that court will not be in session most Wednesdays.

• Jury selection also began on Monday.

📖 Get caught up

⚖️ Trump’s trials and legal cases