Police blotter

The following accounts were taken from reports filed with the Columbia County Sheriff's Office:

Signs damaged

A public safety officer told police Monday that someone damaged several street signs near Greenbrier High School.

The man, who works for the Columbia County Board of Education, said someone spray-painted four street signs that promote safe driving.

The incident reportedly occurred between 11 p.m. Oct. 30 and 5 p.m. Oct. 31.

The signs were valued at an estimated $50 each.

Explosive on porch

A Martinez man reported finding an explosive device on his front porch Monday.

The man, who lives in the 300 block of Timberidge Drive, said he heard a loud explosion at about 1 a.m.

When he awoke, the man said, he noticed debris that appeared to be from a plastic 2-liter bottle.

The man's neighbor said she witnessed three men placing the device on the porch and walking down the street to watch it explode, a sheriff's office report states.

Theft at car wash

A Martinez woman told police Monday that someone stole money out of her car while she was having it detailed.

The woman said she realized $20 was missing from the center compartment of her vehicle after she had her car washed at a business in Martinez, a police report states.

The incident reportedly occurred between 1:50 and 2:10 p.m. Monday.