Investigators in Maryland are scouring three states for the "armed and dangerous" person who attacked a pregnant woman during a terrifying home invasion.

The unidentified person was one of several people involved in the break-in at an apartment complex in Cecil County, Maryland State Police said in a news release.

Police are searching for this person, who is considered "armed and dangerous." (Maryland State Police)

The person, along with three others, "brandished handguns and violently assaulted a pregnant woman inside her apartment before fleeing the scene," according to officials.

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Investigators do not believe the attack was a random act of violence, and are searching throughout Maryland, Pennsylvania and Delaware for the home invader.

Anyone with information is urged to contact Maryland State Police at 410-996-7814 or 410-996-7800.