A mass shooting unfolded at the San Bernardino’s Inland Regional Center on Dec. 2. Here’s what we know:

  • Authorities shut down a UPS hub in San Bernardino late Friday after a package addressed to Syed Farook’s home arrived. The package was later deemed safe by police.
  • Investigators are now looking into the shooting as a potential “act of terrorism,” officials announced Friday.
  • The FBI searched the Farook family home in Corona as part of its investigation.
  • “We’re going to go just as far as we have to” to ensure public safety, Gov. Jerry Brown tells news conference in San Bernardino.
  • Authorities have released a complete list of the deceased victims in the San Bernardino mass shooting.
  • A dozen pipe bombs along with more than 2,000 9-mm rounds, over 2,500 .223-caliber rounds and several hundred long rifle rounds were found at Redlands home linked to shooters, according to police.
  • Authorities now say 21 people were wounded in attack; death toll stands at 14.
  • Police have identified the shooters in Wednesday’s mass killings as Syed Farook, 28, and Tashfeen Malik, 27. Both were killed in a gunbattle with police after a brief pursuit.
  • More mass shootings have occurred in the United States throughout 2015 than there are calendar days in the year itself, according to a list by the website Reddit.