Laura Elizabeth Wallen, 31, was reported missing. Police have called her disappearance suspicious. (Montgomery County Police Department /Montgomery County Police Department )

Investigators have found the vehicle of a pregnant Maryland high school teacher reported missing last week, Montgomery County police said Saturday.

Laura Elizabeth Wallen’s black 2011 Ford Escape was discovered Thursday evening in Howard County at an apartment complex in the 10600 block of Gramercy Place in Columbia. The apartment complex is less than a five-minute drive from Wilde Lake High School, where Wallen, 31, teaches in the Social Studies department, according to the school’s website.

Montgomery police have called her disappearance suspicious.

Wallen, of Rolling Meadow Way in Olney, was last heard from Monday morning, when she sent a text message to her family, police said. Relatives found the message concerning and called police. Investigators have not released the text message.

She also didn’t show up for the first day of school Tuesday, police said.

Wallen is described as white, 5 feet 5 inches tall, and 200 pounds, with blonde hair and blue eyes.

Anyone with information can reach police at 301-279-8000.