COLUMBIA — Bloodstains found in the trunk of a Columbia mother’s car belong to her missing son, police said during a court hearing Monday.

Officers discussed evidence in the case against Zinah Jennings, 23, during a daylong preliminary court hearing. Jennings’ trial on a charge of illegal conduct toward a child is set to begin in late August.

Jennings’ son, Amir, was 18 months old when he was last seen late last year. His mother has been charged with lying to police about where her son is. Jennings is due to give birth to another child later this year.

It’s up to a judge now to decide if the blanket on which the blood was found can be used in Jennings’ trial.

Jennings’ attorney says the blanket could prejudice a jury against Jennings. His client has not been charged with killing her toddler son, but the blanket would imply that, Hemphill Pride II said.

Pride also asked the judge to suppress search warrants and statements that Jennings made to police during their investigation. He also asked that the judge bar television cameras from the trial.

Judge Knox McMahon said he would rule on the requests later.