Boulder Colorado shooter appears in court in a wheelchair after killing 10 at grocery store

Ahmad Alissa appears in court in a wheelchair as his attorneys ask for three months to determine his mental health before he can stand trial for killing 10 at King Soopers grocery store
Alissa appeared before Judge Thomas Mulhavill in Boulder, Colorado, on Thursday at 8.15am local time
His attorneys asked for three months to assess his mental health; they were given at least two weeks
Prosecutors say that they plan to file more charges against the 21-year-old next week
On Monday, he shot dead ten people inside a King Sooper's grocery store before surrendering to police
Alissa has still not given a motive for the killings; he took off his clothes before he surrendered to cops
His family have described him as a loner, paranoid, stupid and say he has never had a girlfriend
He was living in the basement of their family home and working in the family restaurant, The Sultan Grill
Alissa bought his $900 AR-556 rifle a week before carrying out the attack
He has past convictions for assault and used to 'punch' people in high school who made fun of him