Story highlights Police: The suspect complained about the Black Lives Matter movement

Police: He also had tattoos that said 'White Power'

(CNN) An interracial couple was attacked after a self-proclaimed white supremacist saw them kissing outside a Washington restaurant, police said.

Daniel Rowe, 32, came up to the African-American man and the white woman and, without a word, started stabbing them, said Olympia police spokeswoman Laura Wohl.

The man, who was stabbed in the hip, was able to tackle the suspect and restrain him on the ground until police arrived. His injuries were minor, as were the woman's.

The man confessed to stabbing the couple, saying he was a white supremacist, Wohl said.

"The suspect spouted white supremacist sayings and made many many references to racist things," she said.

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