LockBit claimed the attack
https://www.bleepingcomputer.com/news/security/la-housing-authority-discloses-data-breach-after-ransomware-attack/
The Housing Authority of the City of Los Angeles (HACLA) is warning of a "data security event" after the LockBit ransomware gang targeted the organization and leaked data stolen in the attack.
HACLA is a state-chartered agency that provides affordable housing to low-income individuals and families in Los Angeles, California.