BART is in the middle of a computer problem that has deadlocked service Saturday with no trains operating as of 6:25 a.m., according to transit officials. The issue was first reported by BART at 5:50 a.m., per BART spokeswoman Cheryl Stalter. It occurred as crews working overnight on BART's uninterruptible power supply in Oakland ran into problems that impacted the system's traction power supply system and train control routing system. 'Absolute Miracle': Rescuers Find Missing California Sisters Both systems are necessary for BART to safely operate trains, according to officials, as traction power moves the trains and the routing systems ensures they are traveling to an appropriate destination, according to Stalter. There is no estimated time of when service would be restored and commuters are advised to seek alternate routes of transportation as crews work to repair the issue. No Charges for Sacramento Officers Who Killed Stephon Clark BART is advising travelers to use its trip planner at bart.gov to find transit options during the system outage. Full statement from BART: San Jose Robbery and Pursuit Ends in a Car Crash BART crews working overnight on BART’s uninterruptible power supply in Oakland ran into problems that impacted our traction power supply system and train control routing system. Without both these systems, we are not able to safely dispatch trains for service. Traction power sends power to the trains and our rotating system is how we program which direction and route the trains should maneuver. We have multiple crews trouble shooting the problem to get both systems up and working. Bus agencies that serve our stations have granted our riders mutual aid (which means you don't have to pay). We will post updates here and on Twitter at @SFBART .