MARSHFIELD, Wis. (AP) – Marshfield police say officers have made an arrest in the case of a pregnant woman who was doused with gas, punched and threatened.    Authorities say the 23-year-old suspect threatened to light the woman on fire, punched her in the stomach and tried to strangle her during a three-hour domestic ordeal on Sept. 29.  WAOW-TV (http://tinyurl.com/8ta6m9h ) says the woman tried to escape, but was unable to leave.  Police say the man had heroin on him when he was arrested.

—      Information from: WAOW-TV, http://www.waow.com