jessica saltz, what more can you tell us? jessica: police are trying to piece together the situation regarding last night's explosion , answering the questions that remain open -- what motivated the young man to commit this attack, how did he get a hold of this device, which was essentially a nail bomb? police found a mobile phone on his body. -- thegation investigation is very much ongoing. the interior minister of the -- it is toovaria early to tell if there was an islamist motive. this underlines throughout the morning the need in germany to reassess its deportation laws that thisnews broke syrian had actually had his asylum rejected in germany when he arrived two years ago. more recently, information came out that he was supposed to have been deported to bulgaria, although we do not know why he was supposed to be deported. abide bywho do not german laws, it is being said they need to be sent back. the interior minister of germany has said that he's deeply shocked and saddened by the news. a refugee killed one woman with a