By Arlette Saenz and Jeff Zeleny, CNN

(CNN) — Joe Biden will announce his presidential campaign on Thursday with an online video, sources familiar with the plans confirm to CNN.

READ MORE: 'Nothing Is Not An Option:' How To Make Mom Happy On This Mother's Day

The former vice president’s team has been laying the campaign groundwork for months.

Biden will hold his first campaign event in Pittsburgh on Monday, a source said.

READ MORE: Several Fire Departments Called To 3-Alarm Fire At The Pleasant Bar

The Delaware Democrat also is making plans to hit the road to the early voting states of Iowa, South Carolina and New Hampshire in the coming days, a person familiar with his campaign planning said.

This is a breaking news story that will be updated.

MORE NEWS: Two People Transported To Hospital In Crash In Baden

™ & © 2019 Cable News Network, Inc., a Time Warner Company. All rights reserved.