A 22-year-old Hayward resident was arrested Sunday night on suspicion of killing two people earlier in the day, police said Monday.
Oscar Arevalo-Baquiax was arrested at 9:51 p.m. on suspicion of killing a father and a son at a home near the 100 block of Lund Avenue.
Police said they received a 911 call at 4:25 a.m. about an altercation inside the home. Officers went there and located the 49-year-old father Rigoberto Lopez and 22-year-old son Rigoberto Hernandez, both with stab wounds.
Both were pronounced dead at the home, according to police.
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Police are withholding the victims' names. The deaths represent the seventh and eighth slayings this year in Hayward, police said.
Arevalo-Baquiax is being held at the Hayward jail, according to police.
Anyone with information about the slaying is asked to call Detective Humpert at (510) 293-7176.
