(Forest Grove, OR)  --  A Forest Grove man is being held after he allegedly set off a pipe bomb at his estranged wife's home.  The May 19th explosion damaged the house as well as a nearby apartment complex. The woman and another man were inside sleeping at the time but were not hurt.  Timothy Holycross was arrested Wednesday after police executed a search warrant at his home. He faces a number of charges, including attempted aggravated murder, arson and criminal mischief.  Police say Holycross had a stalking order against him after months of repeated unwanted contact with his estranged wife.