WASHINGTON

US House Speaker Nancy Pelosi’s husband, Paul Pelosi, was "violently assaulted" in the early hours of Friday morning, her office said.

"Early this morning, an assailant broke into the Pelosi residence in San Francisco and violently assaulted Mr. Pelosi. The assailant is in custody and the motivation for the attack is under investigation," spokesman Drew Hammill said in a statement.

He was taken to a hospital and is expected to make a "full recovery," according to Hammill. The speaker was in Washington, D.C. with her protective detail at the time of the assault.

The US Capitol Police, FBI & San Francisco Police Department have launched a joint investigation into the break-in and attack, Nancy Pelosi’s office said. In addition to the special agents from the Capitol Police's California Field Office who arrived on the scene quickly after the attack, the department is also sending a special team of investigators from the East Coast to aid the probe.

US President Joe Biden called Speaker Pelosi Friday morning "to express his support after this horrible attack," spokeswoman Karine Jean-Pierre said in a statement.

"The president is praying for Paul Pelosi and for Speaker Pelosi’s whole family," she said in a statement, noting that Biden is "very glad that a full recovery is expected."

"The president continues to condemn all violence and asks that the family’s desire for privacy be respected," added Jean-Pierre.