Broadcaster to pay city for ad scare

Turner Broadcasting has agreed to pay all costs of a security scare triggered by a marketing campaign that disrupted travel in Boston, a spokeswoman for Mayor Thomas Menino said.

Travel on major roadways and rail lines was suspended as police responded in large numbers Wednesday after discovering the battery-powered devices, which were intended to promote a cartoon on a Turner cable network, in Boston and surrounding cities. Authorities blew up one of them.

“They have agreed to pay all costs,” said Megan Maher, a spokeswoman for Menino. She declined to say how much the city spent.