Two arrested in slaying of four

Two men were arrested late Saturday in connection with the killing of a NASA engineer and three other people last week, Los Angeles County sheriffs said Sunday.

Jae Hwan Shim, 39, of Palmdale and Steve Kwon, 37, were taken into custody in Douglas, Ariz., said Sheriff's Deputy Derrick Thompson. They are suspected of taking part in the killing of Joseph Ciganek, who worked for the NASA Dryden Flight Research Center, as well as a woman and two children June 23 in an Antelope Valley home. The woman and children were relatives of Ciganek's wife.

The victims were slain before the intruders set fire to the house, county coroners said last week.

Another suspect in the slaying, Si Young Yoon, 34, of Lancaster, remains at large, Thompson said.