New York City police are looking for a man who they believe is targeting Asian women in Manhattan, striking them in the head with a hard object covered by a bag.

Police on Tuesday released surveillance video of the suspect, who has attacked four women in a span of five days, including Monday, when he hit a woman, 41, in the face near 48 Mulberry St.

At about 4 p.m., police said the suspect tried to strike up a conversation with the woman, who ignored him. He returned and struck her in the face with a gray bag containing a hard object.

The woman was treated and released at a hospital, as were the three other victims, ages 35, 29 and 34, police said.

The first two attacks came last Wednesday, on Grand Street at about 4:15 p.m. and on East 30th Street at about 8:20 p.m.

Another woman was attacked at 12:25 a.m. Friday, near Second Avenue and East 60th Street.

The NYPD has characterized the attacks as a part of bias assault pattern. Anyone with information is asked to call the NYPD's Crime Stoppers hotline at 800-577-8477.

Tips also can be submitted at the Crime Stoppers website, nypdcrimestoppers.com, or by texting information to 274637 (CRIMES) then entering TIP 577.